Persulphate
n. [化]过(二)硫酸盐
✅ 同义词
🗣️ 情景例句
I don't want to sound like a busybody, but didn't you plan to go abroad?
我并不想瞎打听，可你原来不是打算出国吗？
He falls down the stairs.
他从楼梯摔了下来。
Except us.
我们俩除外。