Dihydroxy-
二羟基
🗣️ 情景例句
Yup. I graduated in 1937.
是的，我是一九三七年毕业的。
Pigs may fly,but they are very unlikely birds.
猪儿纵会飞，终究不是鸟。
Hi! I'm sorry I was out when you rang.
你好！我很抱歉，你打电话时我出去了。