名词
中文翻译：绳结
同义词：
['tie', 'knot', 'cord', 'thread']
例句：
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1.The sailor tied the rope around the anchor to keep it from slipping.
水手把绳子系在锚上以防它滑脱。
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2.The boy was so busy that he didn't notice the byssus until it was too late.
那个男孩太忙了以至于他没注意到那根绳子，直到那时已经太晚了。
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3. The fisherman used a byssus to tie his boat securely to the dock.
渔夫用一根绳子把船牢牢地系在码头上。