名词
中文翻译：圆孔
同义词：
['circle', 'circled opening', 'round hole']
例句：
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1.The circular orifice is the key to the machine's operation.
圆形开口是机器运转的关键。
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2. The engineer carefully measured the diameter of the circular orifice.
工程师仔细测量了圆形开口的直径。
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3.The scientist discovered a new way to control the flow of gas through the circular orifice.
科学家发现了一种新的方法来控制气体通过圆形开口的流量。