C-4-fraction
[化] 碳四馏分
🧩 词语组成解析
🗣️ 情景例句
Oh yes, the May Fourth Movement. I've read about it.
哦，是的，五四运动，我听说过。
They had to call in a heart specialist.
他不得不请一位心脏病专家。
The price includes postage charges.
价格包括邮资在内。