名词
中文翻译：中段
同义词：
['middle', 'middle part', 'midsection']
例句：
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1. The book is divided into three parts: introduction, middle, and conclusion.
这本书分为三部分：引言、正文和结论。
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2. The team splits into two groups for the race.
队伍分成两组参加比赛。
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3. The car's engine is in the middle of the engine compartment.
汽车发动机位于引擎舱的中部。