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
Not just for young people.
不仅仅对年轻人来说是这样。
When you're down and blue, go to a comedy.
你灰心丧气的时候，去看看喜剧。
It is best to keep to hot drinks, bottled or canned drinks of well-known brand names----
最好仅饮用开水，名牌瓶装或罐装水