Ethinylation
乙炔化
🗣️ 情景例句
He was very hard driven.
他被迫拼命干活。
He makes the bads every day.
他每天都铺床。
OK!said Miss Yang kindly.Let's forget the whole thing.
“很好！”杨小姐宽厚地说，“让我们忘记全部的事情。”