Energy sources
[经] 能源来源
🧩 词语组成解析
n. 输入源；发起者；来源（source的复数）
🗣️ 情景例句
The weather couldn't have been better.
天气再好不过了。
When am I supposed to check in?
我应该在什么时候到机场办理手续呢？
He knew it would not prove difficult in such a small village.
他知道在这样一个小村庄里抓住小偷并不困难。