Skating on thin ice means you are doing something that could get you into trouble.
（在薄冰上滑行），意思就是你在做一些可能会使你陷入麻烦的事。
I really ought to start doing something. I'm starting to get potbelly.
真的该做些运动了，我都开始长啤酒肚了。
If you help people get well or doing something for others that is called service.
如果你帮助别人或者为别人做些什么，那叫服务。
Please note that just doing something does not get you full marks.
请注意，只是做一些不给你满分。
You can't get very far until you start doing something for somebody else.
除非您开始为其他人著想，否则，您不可能有多大进展。
You can't get very far until you start doing something for somebody else.
除非您开始为其他人著想，否则，您不可能有多大进展。
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