Poly(ethylene oxide)
[化] 聚环氧乙烷
🗣️ 情景例句
How many days will it take for my mail to reach its destination?
我的信件到达目的地要用几天？
Why didn't you ask me for help?
为什么你不请我帮忙？
He will soon visit Darwin.
他不久还将到达达尔文去，