Naphthathiourea
a-萘硫脲
🗣️ 情景例句
the copy of Richard's book on my desk?
在我桌上那本Richard的书 好吗
I wonder if you are on my side.
我不知道你是否站在我这边。
Three quarters of the world's books and newspapers are written in English.
3/4的书籍和报纸是用英语写的。