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he large bony structure near the base of the spine to which the hind limbs are attached in humans 开始学习
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the back of a person's neck. 开始学习
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either side of the face below the eye. 开始学习
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he protruding part of the face below the mouth, formed by the apex of the lower jaw. 开始学习
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the body part above the mouth containing the nostrils and used for breathing and smelling. 开始学习
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each of the upper and lower bony structures in vertebrates forming the framework of the mouth and containing the teeth. 开始学习
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either of the two fleshy parts that form the upper and lower edges of the opening of the mouth. 开始学习
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each of a series of slender curved bones articulated in pairs protecting the thoracic cavity and its organs. 开始学习
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the series of vertebrae extending from the skull to the pelvis 开始学习
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either of the pair of bones joining the breastbone to the shoulder blades. 开始学习
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muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs. 开始学习
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the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body. 开始学习
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remove or take out, especially by effort or force. 开始学习
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separate and expel as waste (a substance, especially a product of metabolism). 开始学习
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the final section of the large intestine, terminating at the anus. 开始学习
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the opening at the end of the alimentary canal through which solid waste matter leaves the body. 开始学习
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the small sac-shaped organ beneath the liver, in which bile is stored after secretion by the liver and before release into the intestine. 开始学习
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a person weak and delicate 开始学习
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he natural color, texture, and appearance of a person's skin, especially of the face. 开始学习
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each of the upper and lower folds of skin that cover the eye when closed. 开始学习
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ither of two external openings of the nasal cavity that admit air to the lungs and smells to the olfactory nerves. 开始学习
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are part of the soft tissue lining of the mouth. They surround the teeth and provide a seal around them. 开始学习
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he soft, fleshy lower part of the external ear. 开始学习
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a framework of bone or cartilage enclosing the brain 开始学习
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a slight line or fold in something, especially fabric or the skin of the face. 开始学习
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a small, hard, benign growth on the skin, caused by a virus. 开始学习
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is a congenital, benign irregularity on the skin which is present at birth or appears shortly after birth, usually in the first month. 开始学习
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also called fever blisters, are tiny fluid-filled blisters that usually form in a cluster, typically at the edge of your bottom lip. 开始学习
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is a bacterial infection of an oil gland in the eyelid.[4] This results in a red tender bump at the edge of the eyelid.[1][5] The outside or the inside of the eyelid can be affected.[ 开始学习
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a small hard inflamed spot on the skin. 开始学习
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a small depression in the flesh, either one that exists permanently or one that forms in the cheeks when one smiles. 开始学习
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is a deep infection of the hair follicle. caused by infection by the bacterium Staphylococcus aureus, resulting in a painful swollen area on the skin caused by an accumulation of pus and dead tissue. 开始学习
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a mark left on the skin or within body tissue where a wound, burn, or sore has not healed completely and fibrous connective tissue has developed. 开始学习
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a violent shock as from a heavy blow. 开始学习
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an area of reddening of a person's skin, sometimes with raised spots, appearing especially as a result of allergy or illness. 开始学习
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the inner surface of the hand between the wrist and fingers 开始学习
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the joint connecting the hand with the forearm. 开始学习
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the flattish part on the upper surface of the tip of each finger. 开始学习
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a covering for the head made of real or artificial hair, typically worn by people for adornment or by people trying to conceal their baldness or in England by judges and barristers in courts of law. 开始学习
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the pulpy acidic fluid that passes from the stomach to the small intestine, consisting of gastric juices and partly digested food. 开始学习
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the duct by which urine passes from the kidney to the bladder. 开始学习
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a watery, typically yellowish fluid stored in the bladder and discharged through the urethra. It is one of the body's chief means of eliminating excess water and salt and also contains urea and other waste substances 开始学习
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each of a pair of glands that open into the vas deferens near its junction with the urethra and secrete many of the components of semen. 开始学习
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the male reproductive fluid, containing spermatozoa in suspension 开始学习
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the mature motile male sex cell of an animal, by which the ovum is fertilized, typically having a compact head and one or more long flagella for swimming. 开始学习
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the area below the waist and above the legs at either side of thebody, or the joint that connects the leg to the upper part of the body: 开始学习
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the part of the human body below the ribs and above the hips. 开始学习
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descriptions of the back or top surface of an organ: 开始学习
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a structure in the human or animal body at which two parts of the skeleton are fitted together. 开始学习
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the joint between the forearm and the upper arm. 开始学习
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he fleshy part at the back of a person's leg below the knee. 开始学习
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the front of the leg below the knee. 开始学习
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the back part of the foot below the ankle. 开始学习
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the undersurface of a person's foot. 开始学习
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a substance that provides nourishment essential for growth and the maintenance of life. 开始学习
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the part of the body on both sides of the spine between the lowest (false) ribs and the hipbones. 开始学习
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