Polymer degradation
[化] 聚合物降解
🧩 词语组成解析
🗣️ 情景例句
Although we hadn't met for 25 years, I recognized him the minute I saw him.
尽管我们有25年未见面了，我一看见他就认出来了。
A bird is known by its note,and a man by his talk.
鸟以声闻，人以言知。
As far as policy is concerned, I have to say something.
谈到政策，我得说几句。