动词短语中文翻译
中文翻译：Unknown
同义词：
['tighten', 'constrict', 'contract']
例句：
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1. The tightrope walker must be very careful not to lose his balance.
走钢丝的人必须非常小心，以免失去平衡。
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2. The tightrope walker must be very careful not to lose his balance.
走钢丝的人必须非常小心，以免失去平衡。
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3. The tightrope walker must be very careful not to lose his balance.
走钢丝的人必须非常小心，以免失去平衡。