机械师用千斤顶支撑汽车。

The mechanic is propping the car with a jack.

在开始之前，确保千斤顶稳定。

Make sure the jack is stable before you start.

使用千斤顶来抬起汽车。

Use the jacks to lift the car.

他为车库买了新的千斤顶。

He bought new jacks for his garage.

使用千斤顶之前一定要检查。

Always check the jacks before using them.

机械师把千斤顶放在车辆下面。

The mechanic placed the jacks under the vehicle.

千斤顶是汽车维护的必备工具。

The jacks are essential for car maintenance.

千斤顶操作员小心地将千斤顶放在汽车下面。

The jackman carefully positioned the jack under the car.

他在车的后备箱里放了一个千斤顶。

He keeps a jack in the trunk of his car.

更换轮胎时，千斤顶是必不可少的。

The jack is essential for changing a flat tire.