In the chloroplast membrane, proton-pumps drive ATP synthesis by establishing an electrochemical gradient.

I bought two bike pumps so my friends and I could inflate our tires before the long ride.

The fishermen loaded the yabby pumps into the truck before heading to the river.

The maintenance crew replaced several worn force pumps to restore normal water pressure in the building.

During the overhaul, the mechanics discovered that the scavenge pumps were clogged with debris, reducing oil return and risking engine failure.

The mechanic inspected the fuel pumps to determine why the engine kept stalling.

The coastal engineers inspected the sand pumps before the dredging operation began.

The maintenance team ordered replacement seals for the slider pumps after noticing decreased flow rates.

The engineers inspected the old donkey pumps to see if they could be repaired.

The maintenance team inspected the door pumps to ensure they would close securely during high winds.