C-2-fraction
[化] 碳二馏分
🧩 词语组成解析
🗣️ 情景例句
but this is an important opportunity.
但这是一次很重要的机会。
She's always helping people.
她总是帮助别人。[现在进行时]
Fine, thanks. How are you?
谢谢，你好吗？