Biformyl
[化] 乙二醛
🗣️ 情景例句
What's troubling you?
你有什么麻烦？
Can you do it?
你行不行啊？
It was warm last Sunday, so I went and sat on the river bank as usual.
上星期日天气很暖和。于是我和往常一样，又去河边坐着。