Polycarboxylic
[机] 多羧酸的
🗣️ 情景例句
Mr. Carlson will be with you shortly. Carlson
先生不久就可以见你。
The better the day, the better the deed.
日子越美好，事业越顺当。
Jack is trying to cut down on smoking.
竭克正竭力戒烟。