动词
中文翻译：解开
同义词：
['unfasten', 'untie', 'unhook', 'unwind']
例句：
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1.The knot on the rope was unbelt to release it.
绳子上的结被解开了。
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2.She unbelt her seat belt before she left the car.
她离开汽车前解开了安全带。
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3. The tension in the wire was unbelt by the wind.
风吹散了电线上的紧张感。