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重点讲解：
1. be interested in 感兴趣的；有兴趣的；关心的；
例句：Physicists are still interested in magnetism.
物理学家对磁力仍有兴趣。
2. used to do sth. 过去常常；过去曾；
例句：Young ladies used to have lessons in deportment.
少女以前要上仪态课。
3. take off 拿掉；
例句：Why do you all take off all drawings?
你为什么把所有的画都取下来了?
4. go on 继续；持续；
例句：The storm held off. They went on with their work.
暴雨暂时没下，他们继续干活。
v. 反映，反射，归咎
