Polycyclic hydrocarbon
[机] 多核烃
🧩 词语组成解析
a. 多环的\\n[医] 多环的
🗣️ 情景例句
Yes, I read you loud and clear.
嗯，我完全明白。
He is in difficulty in his business.
他在事业上遇到困难了。
I wish I had never met you.
我真后悔这辈子遇到你！