名词
中文翻译：火车头
同义词：
['locomotive', 'locomotive engine']
例句：
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1.The engineers are responsible for the maintenance of the train's locomotive.
工程师们负责维护火车的机车。
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2. The locomotives were designed to be more efficient and reliable than their predecessors.
这些机车的设计旨在比它们的前辈更高效、更可靠。
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3.The engineers worked tirelessly to ensure that the locomotives were in perfect condition before the journey began.
工程师们努力不懈，确保在旅行开始前机车处于完美状态。