重点讲解：
1. shake out
抖开；将（布料或衣服）抖干净；将…抖平；
eg. While the water was heating she decided to shake out the carpet...
趁着烧水的时候，她决定将地毯抖抖干净。
eg. I took off my poncho, shook it out, and hung it on a peg by the door.
我脱下了披风，抖落干净，然后挂在门上的挂衣钉上。
2. throw up
呕吐；呕出；
eg. She said she had thrown up after reading reports of the trial.
她说，她看完审判报告后都吐了。
eg. When I get seasick, I throw up my food.
我一晕船就呕吐。
3. insist on sth. doing sth.
坚持；坚决认为（或主张、要求）；
eg. I still insist on my viewpoint.
我仍坚持我的观点。
eg. The tourists insist on keeping to their plan.
旅行者坚持按旅行计划行事。