ATOX50立磨所配备磨辊辊皮的厚度是（），磨盘衬板的厚度是（）。

翻译画线部分的单词 将汉语意思写在横线上。

1. Lie on your back, please.           

2. Can you play table tennis with me?            

3. Touch his head with your left hand.            

4. -What colour is the dog?

    -It's black.           

5. Mr Black is our English teacher.