Ethynation
乙炔化
🗣️ 情景例句
What's your opinion about this?
你的观点是什么？
Excuse me. Could you please tell me how to get to the station?
劳驾，请问到火车站去怎么走？
Dressed in dark glasses and old clothes, they had taken special precautions so that no one should recognize them.
他们戴着墨镜，穿着旧衣裳，特别小心以防别人认出他们。