Expansion stroke
[化] 膨胀冲程
🧩 词语组成解析
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
Did you get a chance to get outside at all?
有时间出门吗？
Bill was very jumpy as he waited for the phone to ring.
贝尔忐忑不安地等着电话来。
The number 13 bus will take you to the hospital.
13路车会带你去医院。