Polyvinylamine
聚乙烯胺; 聚乙烯胺
🗣️ 情景例句
We'll place a trial order with you for 300 cases of pork luncheon meat.
我们想试定300箱罐装午餐肉。
What do you want?
你想要什么？
'At ten to eight.I bought a paper and waited for the train.'
“7点50分。我买了张报纸，等着车来。”