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
five five five … eight four four eight.
555……8448。
I want to persuade you to change your mind.
我想要到说服你改变你的主意。
I'm going to give her a book.
我想送她一本书。