Polyacrylic acid
[建] 聚丙烯酸
🧩 词语组成解析
🗣️ 情景例句
It could be Alexandra.
可能是 Alexandra 。
He has come to be recognized as an expert in the problem of overpopulation and food supply.
由于他的经验促使他终于成为了公认的人口过剩和食物供应问题的专家。
Some of them are going to the park.
他们中有几个正走进公园。