Acetylenehalide
[机] 乙炔基卤
🗣️ 情景例句
Why can't I design dresses for you here at home?
为什么我不能在家里为你设计服装呢？
By what time should I check in?
我该什么时间办理登机手续呢？
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。