Polyacetal
[化] 聚缩醛
🗣️ 情景例句
My favorite hobby is coin collecting.
我最大的爱好是收集硬币。
We'll start with an orientation video. It runs about 15 minutes.
我们将从一个电视简报开始，大概放15分钟。
Of course. Right now we can't produce goods quickly enough for all our customers.
当然可能啦。现在我们还不能很快地为我们所有的顾客生产商品。