Abrasives
n. （研）磨料, 磨蚀剂( abrasive的复数形式 ); <地质>磨蚀岩屑
🗣️ 情景例句
OK, everybody.
好啦 各位。
Do you think you could keep the noise down?
你看能不能小声一些？
There are some changes the still have to be made.
有些地方还得修订。