名词
中文翻译：下部分
同义词：
['underside', 'lower part', 'undersides']
例句：
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1.The car has a large under-part that can be used as a storage compartment.
这辆车有一个大型的下部分，可以用作储物间。
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2. The machine has an under-part that is designed to protect the user's fingers.
这台机器有一个下部分，设计用来保护用户的手指。
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3. The book has an under-part that contains information about the history of the country.
这本书有一个下部分，包含了关于该国历史的信息。