Poly(ethylene oxide)
[化] 聚环氧乙烷
🗣️ 情景例句
or we won't be finished by dinnertime.
要不然， 晚餐时间到了我们还做不完。
I asked him to leave immediately, but he wouldn't.
我请他马上离开，但是他不肯。
Exploring really deep caves is not a task for the Sunday afternoon rambler.
探测非常深的洞穴不是那些在星期日下午漫步的人所能胜任的。