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
Hello. Is Susan there?
喂，是苏珊吗？
I wouldn't worry about it, if I were you.
我是你的话，我不会担心的。
It is always wiser and safer to face up to reality,
遇事采取面对现实的态度总是比较明智和稳妥的，