Persulfacte
[化] 过硫酸盐; 过二硫酸盐
🗣️ 情景例句
Yeah.
是的。
If not, our repairman can come to you.
要不然，我们的维修人员可以上你那里去。
It was spring,but the weather was awful.It rained all the time.
是春天，但天气太糟了。一直在下雨。