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表示特指,例如:
1、On the face of it, it seems like a great deal.表面上看来好像很多。
2、You've got something on the end of your nose.你的鼻尖上有个东西。
3、I'm doing some research on the subject.我正就这一课题进行研究。
4、Work has begun on the construction of the new airport.新机场的修建已经开工。
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