Acetylenedinitrile
乙炔二氰, 丁炔二腈
🗣️ 情景例句
But I have promises to keep,
但是我有约要赴
They that live longest must die at last.
活得最久长，终难免一亡。
By the end of next year, they will have finished work on the new stadium.
到明年年底，他们将把新体育场建成。