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
What kind of dresses would you design?
你打算设计哪种服装？
God defend me from my friends; form my enemy I can defend myself.
防友靠天，防敌靠己。
He no sooner recovers his equilibrium than the next porpoise comes along and hits him another crack.
海龟刚恢复平衡，第二只海豚又冲过来猛击一下。