名词
中文翻译：慢井
同义词：
['slow well', 'slow cavern']
例句：
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1. Theslow hole in the tunnel was filled withwater.
隧道里的慢井被水填满了。
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2. The slow hole is a popular spotfor birdwatching.
慢井是观鸟的热门地点。
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3. The slow hole wasdiscovered during an archaeological dig.
慢井是在一次考古挖掘中被发现的。