Piston-engine
[机] 活塞发动机
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
engine
['endʒin]
n. 发动机，引擎;工具;火车头;机车;
vt. 给…安装发动机;
🗣️ 情景例句
Sir, this offer will expire this week.
先生，这次特价这个礼拜就结束了。
I wonder why they're angry.
伙计，他们为什么生气？
We could see that the path continued on the other side, but we had no idea how we could get across the stream.
我们可以看到小路在深溪对岸继续向前伸展，但却不知如何越过这道深溪。