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
I'll let you off this time.
这回我放过你。
We never know the worth of water till the well is dry.
井干方知水可贵。
You will have to wait and see.
你得等一等看。