Piston-engines
(piston-engine 的复数) [机] 活塞发动机
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
n. 火车头；发动机, 引擎（engine的复数形式）
🗣️ 情景例句
Hand me two eggs from the refrigerator,
替我从冰箱拿两个蛋来。
Who serves everybody gets thanks from nobody.
人人都侍候，个个不见好。
As it is only six feet across, it is barely noticeable.
仅6英尺宽，很难被发现。