Once a week
初中 Junior High每星期一次
🧩 词语组成解析
week
[wik]
n. 一星期，周;工作周（一个星期中的工作时间）;
🗣️ 情景例句
I want to send this letter to China, by air mail.
我想把这封信航空邮到中国。
A friend in need is a friend indeed.
患难朋友才是真朋友。
That's too expensive for us.
这对我们来说是太贵了。