Radiation degradation of polymer
[化] 聚合物辐射降解
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
Mmm-hmm. That's because he's sleeping.
嗯。那是因为他睡了。
I often go to the office in the morning.
我常常在早上去办公室。
Did you serve this gentleman half an hour ago, Caroline? He says he's the man who bought these books.
卡罗琳，半小时前你接待过这位先生吗？他说他就是买这两本书的人。