动词
中文翻译：拧紧
同义词：
['fasten', 'secure', 'tighten']
例句：
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1. He tightened the screws on the door to make sure it was secure.
他拧紧了门上的螺丝，确保它牢固。
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2. The car's tires were too loose; she needed to tighten them.
汽车的轮胎太松了，她需要拧紧它们。
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3. The tightrope walker had to tighten his grip to balance himself.
走钢丝的人必须抓紧自己以保持平衡。