a [adjective] locomotive
形容词常用于修饰火车头的类型或特点
a powerful locomotive
一台强劲的火车头
火车的动力单元；用于在铁路轨道上牵引火车的自推进引擎的轮式车辆；通过高进口水平推动世界经济的国家；火车头；机车
a self-propelled engine used to draw trains
火车的动力单元
The power unit of a train that pulls the coaches or wagons.
用于在铁路轨道上牵引火车的自推进引擎的轮式车辆
a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks
通过高进口水平推动世界经济的国家
A country which drives the world economy by having a high level of imports, such as the United States.
The old steam locomotive puffed slowly up the hill.
那辆老式蒸汽机车缓慢地喷着气爬上山坡。
用法提示：本句中"locomotive"是名词，指火车头，作主语。
Engineers are developing a new electric locomotive that is more efficient.
工程师们正在开发一种更高效的新型电力机车。
用法提示：本句中"locomotive"是名词，指机车，作宾语。
We saw a long freight train pulled by three locomotives at the station.
我们在车站看到一列由三台机车牵引的长货运列车。
用法提示：本句中"locomotives"是名词复数，指机车，作介词宾语。
形容词常用于修饰火车头的类型或特点
a powerful locomotive
一台强劲的火车头
描述火车头的动作
the locomotive pulls the train
火车头牵引火车
表示数量，locomotive是可数名词
two locomotives
两台火车头
在铁路语境中常与locomotive互换使用，但engine也可指其他类型的发动机。
比locomotive更具体地强调铁路用途，但基本同义。
非正式、文学性用语，不用于技术或正式场合。
grammar · medium
易错句子The train is pulled by a strong engine.
正确表达The train is pulled by a strong locomotive.
中文中“机车”可指发动机和火车头，但英语里locomotive特指火车头，engine指发动机，此处需用locomotive。
grammar · medium
易错句子Locomotive arrived at the station.
正确表达A locomotive arrived at the station.
locomotive是可数名词，单数形式前必须加冠词（如a, the），不可单独使用。
locomotive 特指火车的机车头；engine 泛指任何将能量转化为机械力的发动机，也可指火车头（但更常见于英式英语指火车头）。使用时要区分语境：在火车语境中 locomotive 更正式专业。
locomotive 仅指牵引列车的机车，不含车厢；train 指由一节或多节车厢连接而成的整列火车，包含机车。不要用 train 来指代独立的机车头。
内燃机车
The diesel locomotive pulled the freight train across the plains.
内燃机车拉着货运列车穿过了平原。
蒸汽机车
Museum visitors can see a restored steam locomotive from the 19th century.
博物馆参观者可以看到一台修复过的19世纪蒸汽机车。
电力机车
Many modern railways use electric locomotives for passenger services.
许多现代铁路使用电力机车提供客运服务。
机车引擎
The locomotive engine was carefully inspected before the journey.
出发前仔细检查了机车引擎。
火车司机
The experienced locomotive driver ensured a smooth ride.
经验丰富的火车司机确保了平稳的行驶。
机车库
The old locomotive shed now houses a railway museum.
旧机车库现在成了一个铁路博物馆。
像火车头一样
He charged through the crowd like a locomotive.
他像火车头一样冲过人群。
人形火车头（精力充沛的人）
My boss is a human locomotive; he never stops working.
我的老板是个精力充沛的人，从不停歇。
经济火车头
Manufacturing has been the locomotive of the economy for decades.
几十年来，制造业一直是经济的火车头。
我是一台火车头，我是一台火车头，我来追你了。
This line from Guns N' Roses' 1991 song "Locomotive" uses the word as a metaphor for relentless pursuit.
这句来自枪花乐队1991年歌曲《火车头》的歌词，将"火车头"比喻为不懈追逐。
在机车喘息的混乱中，永恒的失败者一头冲向死亡。
This line from Jethro Tull's 1971 song "Locomotive Breath" uses the word to describe a relentless, unstoppable force.
这句来自杰索罗·塔尔1971年歌曲《机车喘息》的歌词，用"机车"形容不可阻挡的力量。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.