In order to be happy at work, you must find something that you enjoy doing. This might narrow down your choices considerably.
为了工作得开心，你就必须找一些自己乐于做的事情，这就大大缩小了选择范围。
Narrow down your topic to something that can be thoroughly discussed in the amount of pages your assignment calls for.
将你的题目缩小到在作业要求的篇幅内能够进行充分讨论。
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