Photopolymerizer
光聚合剂
🗣️ 情景例句
Have you studied any courses related to the post you are applying for?
你曾修读与这份工作有关的科目吗？
There are spots in (or on) the sum.
人孰无过。
Yes, it is. Why don't you take off your sweater?
是啊，你何不脱了羊毛衫呢？