zatkany 用英语:

It consists of two main parts: an outer casing, which is hollow but closed on one end, and the piston itself—a rod or plunger that fits the hole in the casing perfectly and whose tip reaches almost, but not quite, to the stoppered end of the tube.

My throat feels clogged up.

The street is clogged with traffic.

Tom expects me to help Mary clean out the clogged pipe.

Unfortunately, the toilet is clogged.

The sink is clogged.

He plugged in the radio.

My ears feel plugged up.

The road was obstructed by fallen trees.

A snowslide obstructed the road.

They obstructed our plan.

If you sleep on your back it's easier for your upper airway to be obstructed because your tongue, uvula, etc. slip towards the back of your throat.

The crowd obstructed the police in the discharge of their duties.

The town water supply was seriously obstructed by heavy rainfalls.