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
What made you decide to change job?
是什么使你决定更换工作？
Do you have any other flights?
你们还有别的班机吗？
so that I was positive I should recognize it as familiar territory.
因此，我相信这段路对我来说会是很熟悉的。