Four-stroke
a. 四冲程的（内燃机）; 四行程
🧩 词语组成解析
four
[fɔr]
num. 四;四个;第四;
n. 四的;四个一组之物;
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
Spring is at hand.
春天即将来临。
Confession is the first step to repentance.
悔罪先须认罪。
I could say nothing but that I was sorry.
我除了说“对不起”之外，什么也说不出来。