Persulfacte
[化] 过硫酸盐; 过二硫酸盐
🗣️ 情景例句
The course I took was above me.
我上的这门课太难了。
Seven percent would be possible for orders for, say, 500 or more.
订购500台或500台以上都不得有可能给予7%的折扣。
Be that as it may, the nerve poison does its business with man far more quickly than the blood poison.
不过，神经毒辣液比溶血性毒液在人身上起作用快得多。