Peroxychromates
[机] 过氧铬酸盐
🗣️ 情景例句
Is it all right if I use a letter of credit?
如果我使用信用证，没关系吧？
He that would command must serve.
欲做先生，先做学生。
Oh! They're all places of great interest in China. I think you'll have a good time.
噢！这些地方都是中国的名胜。我想你们会玩得很痛快的。