Disulphides
(disulphide 的复数) n.二硫化物
🗣️ 情景例句
I'm concerned.
我很担心。
Do you know the exact date?
你知道确切日期吗？
I'm not sure. It was difficult to see. Wei Hua and Sun Meiying were both neck and neck.
我不敢肯定。很难说。魏华和孙美英不分上下。