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
No. I'm sorry, but we can't send out our tow truck to get you.
不能，真对不起，我们不能派拖车来。
A sense of regret or resentment will not help us in any way.
后悔和怨恨不会给我们任何帮助。
After her husband had gone to work.
理查兹夫人等丈夫上班走后，