Enysite
羟铝铜矾
🗣️ 情景例句
We have 5 international patents which we are ready to sell.
我们有五项国际专利可以出售。
Is it convenient to you if I come at 6 p.m.?
如果我下午6点来拜访你，方便吗？
He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people.
还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。