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
She would have loved it.
她会喜欢这里的。
His support furthered my career.
他的支持促进了我的事业。
Who's this?
这是谁？