Alcotex
乙烯醇均聚物
🗣️ 情景例句
Have you ever studied French?
你学过法语吗？
A smooth sea never made a skillful mariner.
平静的海洋练不出熟练的水手。
Then they arrived just when we wanted them.
这样，他们可以恰好在我们要求的时间到达。