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We are a non-profit organization dedicated to the conservation of ocean mammals. 开始学习
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not intended to make a profit, but to make money for a social or political purpose or to provide a service that people need
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He devoted his life to serving his family, friends, and neighbors. 开始学习
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to give your time or effort completely to something you believe in or to a person, or to use a particular amount of time or energy doing something
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Ambulances, police cars, and fire engines all converged on the scene. 开始学习
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to come from other places to meet in a particular place
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Four subtracted from ten equals six. 开始学习
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to remove a number from another number
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That sort of extreme diet is not sustainable over a long period. 开始学习
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able to continue over a period of time
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You might be sleep-deprived but you will finish the book. 开始学习
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This bike is second-hand but it's still in good condition. 开始学习
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not new; having been used in the past by someone else
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travelling a long way, or separated by a long distance
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He always leaves his homework until the last minute. 开始学习
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the latest possible opportunity for doing something
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He looked uncomfortable, like a self-conscious adolescent. 开始学习
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nervous or uncomfortable because you are worried about what people think about you or your actions
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My jeans are almost worn out because I've worn them so much. 开始学习
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something that can no longer be used because it is so old or because it has been damaged by continued use
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made at home and not bought from a shop
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The restaurant is air-conditioned. 开始学习
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cooled, or equipped with a system for cooling
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Only people who can afford to lose their money should make high-risk investments. 开始学习
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involving a greater than usual amount of risk
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not willing to accept ideas or ways of behaving that are different from your own
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behaving in a way that is accepted as correct
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There are hyphens in "well-to-do". 开始学习
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the symbol -, used to join two words together, or to show that a word has been divided into two parts at the end of one line and the beginning of the next
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a hands-free piece of equipment, especially a phone, can be used without needing to hold it in your hand
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Negotiators have reached a dead end in their attempts to find a peaceful solution. 开始学习
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a situation that has no hope of making progress
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causing happy and positive feelings about life
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a groundbreaking discovery 开始学习
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new and likely to have an effect on how things are done in the future
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The combination of Pierce’s tenor sax and Roney’s high-pitched trumpet was exciting. 开始学习
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having a high and sometimes also loud or unpleasant sound
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When technology works, it's a wonderful labour-saving device. 开始学习
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able to save time and effort
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a life-changing decision/moment 开始学习
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having an effect that is strong enough to change someone's life
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an eco-friendly product/company/organization 开始学习
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designed to have little or no damaging effect on the environment
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The 1990s saw a huge increase in the numbers of low-cost airlines. 开始学习
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