Acetylenedinitrile
乙炔二氰, 丁炔二腈
🗣️ 情景例句
What's the difference between A and B?
A和B有什么不同？
Good evening, how are you?
晚安，你好吗？
Frank smiled when he remembered his hard early years and the long road to success.
弗兰克回想着他早年的艰难经历和走过的漫长的成功之路，微笑了。