Polyacetals
聚缩醛(树脂)
🗣️ 情景例句
It was a pleasure meeting you, too.
我也很高兴碰到你。
The land in this region is dry and parched.
在这个区域的陆地是干燥炎热的。
Over the years, one may well become a authority on one's hobby and will very probably be asked to give informal talks to little gatherings and then,
一人积了多年经验会成为自己这种爱好的权威，很可能应邀在小型集会上作非正式的讲话。