Ethynation
乙炔化
🗣️ 情景例句
Mr. Marker and his wife have invited me to a Christmas dinner.
马克先生和他妻子邀请我吃圣诞晚宴。
I sure hope I can answer them for you.
我真的希望我能回答你的问题。
I can't follow you.
我不懂你说的。