Polyacrylamide
[化] 聚丙烯酰胺
🗣️ 情景例句
who spent the last five years
用过去五年的时间
Pleasant hours fly past.
快乐时光去如飞。
Fearing the authorities, Eric remained in hiding after the war as well.
由于害怕当局，埃里克战后继续深藏不露。