Acetylenedinitrile
乙炔二氰, 丁炔二腈
🗣️ 情景例句
If you are going to insist, then just do it.
如果你想坚持，那么就坚持到底。
He cut his finger because he was careless.
他不小心割破了手指头。
Mary has written ten letters today.
马力今天写了十封信。