To fill the tank of a motor vehicle with gasoline.

用汽油来填装一辆机动车的油箱。

Good. When I return it, do I have to fill the tank of gas?

很好，我还它的时候，需要把油箱加满汽油吗？

I had forgotten to fill the tank of my 1970 American Motors Gremlin before the weekend.

我忘了在周末之前给我那辆美国汽车公司1970年产的格雷姆林车加满油。

Companies have aggressively sent workers back out on the road, but stricter travel policies emphasize utility over luxury, with some companies billing employees for incidental expenses like in-flight snacks, checked-baggage fees and rental-car fuel surcharges if they forget to fill up the tank.

WSJ: More Companies Treat Business Travel Like Budget Travel