Growing up, Paul worked many summers at his grandfather's gas station, operating the cash register, rotating tires and changing air filters.

成长过程中，保罗曾加油站很多夏天在他祖父的，操作收银机，旋转轮胎和改变空气过滤器。

youdao

The effects of the load, inflation pressure and rotating speed on the rolling resistances of 195/65R15 and 205/55R16 tires from different manufacturers were experimentally investigated.

试验研究轮胎负荷、充气压力和旋转速度对国内外不同轮胎生产企业195/65R15和205/55R16轮胎滚动阻力的影响。

youdao

In other words, the Wall Street equivalent of changing the oil and rotating the tires.

WSJ: At J.P. Morgan, Managing the Unmanageable