名词
中文翻译：孔眼
同义词：
['hole', 'aperture', 'orifice']
例句：
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1.The hole in the wall is big enough for a small dog to fit through.
墙上的洞足够小，一只小狗可以钻进去。
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2.The aperture in the lens allows light to pass through.
透镜中的孔允许光线通过。
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3. The orifice of the valve is where gas flows in and out.
阀门的孔是气体进出的地方。