Mobile sources
[经] 机动的来源
🧩 词语组成解析
n. 输入源；发起者；来源（source的复数）
🗣️ 情景例句
It's hard to do anything but listen in this family.
在这个家庭 除了听别人之外还能怎样。
I have forgotten his telephone number.
我忘记了他的电话号码。
I can't order these clothes, unless you can wait some time, or change this note.
如果你不能等些时候或者破开这张票子，我就不能订做这批衣服。