Protoxide
n. [化]低氧化物,初氧化物(亦作protoxid)
🔁 扩展释义
【化】 氧化亚某; 低氧化物【医】 低氧化物.亚氧化物
🗣️ 情景例句
is no longer in service.
是空号。
I've made a reservation at the hotel you used last time.
我已预订了你上次住过的旅馆。
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，