1.pull off 做成(某件难事)
The National League for Democracy pulled off a landslide victory.
国家民主联盟取得了压倒性优势的胜利。
2.one-off 一次性事物，一次性的
Our survey revealed that these allergies were mainly one-offs.
我们的调查显示，这些过敏大多是一次性反应。

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