🧩 词语组成解析
🗣️ 情景例句
I know that.
我知道。
How much do you charge per unit?
你们每件要价多少呢?
I've got a problem and as I don't know what to do I thought I'd write to you and ask for your advice.
我有一个问题,因为我不知道该怎么办。我想我最好写信给你,征求你的意见。