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
and becoming part of the Stewart family, too.
而且成为Stewart家庭的一份子。
The history paper was really easy, so was the biology one.
历史试题确实容易，生物试题也很容易。
OK. We'll meet again tomorrow and make a decision then.
好吧。我们明天见，那时再作决定。