travelling wheelheed roll grinder

例句：

1. 1.The travelling wheel is the main part of the car.
   旅行车是汽车的主要部分。
2. 2. They used to travel in a trailer for many years.
   他们过去常常用拖车旅行很多年。
3. 3. The van was parked in front of the house.
   那辆面包车停在房子前面。
4. 1. He must heed the advice given by his teacher.
   他必须听从老师给出的建议。
5. 2. She listened carefully to what the doctor said.
   她仔细地听着医生的话。
6. 3.I need your heedful attention.
   我需要你的注意。
7. 1. A grinder can be used to grind coffee beans.
   一台磨坊可以用来磨咖啡豆。
8. 2. The mill grinds grain into flour.
   磨坊将谷物磨成面粉。
9. 3. The farmer uses a grinder to crush the wheat.
   农民使用一台磨坊来碾小麦。