Piston-engines
(piston-engine 的复数) [机] 活塞发动机
🧩 词语组成解析
n. 火车头;发动机, 引擎(engine的复数形式)
🗣️ 情景例句
I'm going somewhere else this evening.
今晚我要去另外一个地方。
I underestimated the cost of the journey.
我对旅行费用估计不足。
His cake is four times as big as mine.
他的蛋糕是我的四倍大。
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