Polyvinylamine
聚乙烯胺; 聚乙烯胺
🗣️ 情景例句
I'm sure the store has others.
我相信那家店一定还有其它的尺寸。
Bye!
再见啦！
After jumping about on the carpet and twisting the human frame into uncomfortable positions,
我在地毯上跳来蹦过去，扭曲身子，摆出各种姿势，弄得浑身不舒服，