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重点讲解：
1. in terms of 根据；在......方面；
The data is limited in terms of both quality and quantity.
这份资料在质量和数量上都很有限。
2. step in 介入；干预；
If no agreement was reached, the army would step in.
我们第二天早晨开车去机场接苏姗。
3. take part in 参加；参与；
You don't need strength to take part in this sport.
参加这项运动不需要太多体力。
4. such as 例如；比如；
Organizations such as schools and clubs bind a community together.
诸如学校、俱乐部等机构使社区成为一个整体。
