名词
中文翻译：孔
同义词：
['notch', 'groove', 'notch', 'indentation例句：1. The surgeon made a small sulcus in the skin to make an incision.（外科医生在皮肤上做了一个小的凹口以便进行切口。）2. The carpenter cut a sulcus in the wood for the door hinge.（木匠在木头上切了一个槽以便安装门铰链。）3. The scientist measured the depth of the sulcus on the sample.（科学家测量了样品中凹槽的深度。）']
例句：
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1. The surgeon made a small sulcus in the skin to make an incision.
外科医生在皮肤上做了一个小的凹口以便进行切口。
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2. The carpenter cut a sulcus in the wood for the door hinge.
木匠在木头上切了一个槽以便安装门铰链。
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3. The scientist measured the depth of the sulcus on the sample.
科学家测量了样品中凹槽的深度。