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
Whose woods these are I think I know.
这是谁的林子， 我想我知道。
A man becomes learned by asking questions.
要长学问，就得多问；多问则业精。
Putting both my hands on her face when she spoke, she let me feel all the movements of her lips and throat.
她说话时，把我的两只手放在她的脸上，让我抚摸她嘴唇和喉头的活动情况。