Alcotex
乙烯醇均聚物
🗣️ 情景例句
Try again.
再试一次。
First, I would like to express to all of you here our sincere welcome.
首先，我向在坐的诸位表示诚挚的欢迎。
Your English is improving little by little.
你的英语正在渐渐提高。