名词
中文翻译：内层
同义词：
['inner', 'interior', 'core']
例句：
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1. The engineer designed the building with an endoscope.
工程师用内窥镜设计了这座大楼。
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2. The scientist conducted experiments on the endoscopy of the human body.
科学家对人体内窥镜进行了实验研究。
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3. The team decided to use a new endoscope for their surgery.
团队决定使用一种新的内窥镜进行手术。