Piston engine
[机] 活塞动力机
🧩 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
I just stopped by to say hello.
我只是顺路过来问个好。
I will be going to school in a few weeks from now.
我将在几个星期后上学去。
To finish so much work in a day is impossible.
一天之内干完这么多事是不可能的。