Borides
硼化物陶瓷材料
🗣️ 情景例句
I know you want to get to it.
我知道你想要开始啦。
What is the color of your new book?
你的新书是什么颜色的？
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。