名词
中文翻译：拉紧
同义词：
['tightening', 'tension-building']
例句：
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1. The tightrope walker must be very tense before the performance.
杂技演员在表演前一定非常紧张。
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2. The tension between the two countries is rising.
两国之间的紧张关系正在上升。
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3. She needs to tighten up her schedule to meet the deadline.
她需要调整她的日程来满足最后期限。