Piston stroke
[化] 活塞冲程; 活塞行程
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
stroke
[strok]
n. 一击;击球;划水动作;中风;
vt. 划掉;轻抚;轻触;敲击;
vi. 击球;作尾桨手，指挥划桨;
🗣️ 情景例句
so that the people of our town
好让我们镇上的人
The beginnings of all things are small.
万事开头小。
And I can't find her passport anywhere. So she must have taken that too.
而且我在哪都找不到她的护照，所以她一定也带去了。