Ethinylation
乙炔化
🗣️ 情景例句
Is that it?
就这些吗？
He has been to America.
他曾去过美国。[表示曾经有过的经验]
Another patient might equally well complain that her neighbours were combining to slander her and persecute her,
另有一位病人可能同样有理由抱怨说，她的邻居们正在联合起来对她进行诽谤和迫害，