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
Things are looking up.
情况在好转。
He has a ring.
他有一只戒指。
In order to tell the bees apart, he painted some bees with little spots of colour.
为了区别这些蜜蜂，他在一些蜜蜂身上涂上小色点。