C-4-fraction
[化] 碳四馏分
🧩 词语组成解析
🗣️ 情景例句
and a pitcher of lemonade.
和一壶柠檬汁。
He is in difficulty in his business.
他在事业上遇到困难了。
The boy was too nervous to speak.
那男孩紧张得说不出话来。