Perthiocarbonate
过硫碳酸盐
🗣️ 情景例句
My stomach growls at me when I'm hungry.
我的肚子在咕噜咕噜地向我发牢骚呢！
It's no sin to sell dear, but a sin to give ill measure.
高价卖不为过，短斤少两才有罪。
I repeated my question several times and at last he understood.
我把问话重复了很多遍。他终于听懂了。