Acetylenedihalide
[建] 乙炔化二卤, 恒二卤代乙烯, 二卤乙烯
🗣️ 情景例句
Let's meet more often.
让我们常见面。
You have to change at chicago station.
你必须要在芝加哥站转车。
English is spoken as a first language by most people in the USA, Great Britain, Canada, Australia and New Zealand.
在美国、英国、加拿大、澳大利亚和新西兰，大多数人都把英语做为第一语言。