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
He is with someone right now. Would you hold?
他现在在会客。你可以稍等吗？
Which would you rather have--steak or fish?
你想要牛排还是鱼？
However, I am very determined.
然而，我已经下定决心了。