名词
中文翻译：洞
同义词：
['gap', 'crevice', 'opening', 'gaping hole']
例句：
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1. The hole in the wall is big enough to fit a basketball.
墙上的洞足够大，可以放一个篮球。
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2. The hole in the ground was filled with water after the rain.
雨后地面的洞被水填满了。
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3. The hole in the wall led to a secret room beneath the house.
墙上的洞通向房子下面的一个秘密房间。