Four operations
四则运算
🧩 词语组成解析
four
[fɔr]
num. 四;四个;第四;
n. 四的;四个一组之物;
n. 运作；运营；业务操作（operation的复数）
🗣️ 情景例句
Oh, really?
噢， 是吗？
Believe somebody on his bare word.
人言无据，切勿轻信。
They killed the bison, cut off the skins and left the bodies behind to rot.
他们把野牛杀死剥皮，尸体就任其腐烂。