用“grind on”造句大全，grind on造句

I grind one of its face yesterday, but I can't see it has been collapsed beofre, but I discover its Damascus veins.

The hard bone of ink fish ( or octopus ), his air. next wherewith grind one ' s teeth.

Xiang Junhui says, grind one student is OK according to him interest, choose the course of 3—5 credit.