Example sentences

• Although the situation improved, we can't let our guard down yet.

• It could be a trap; don't let your guard down.

• You'd better stay on your guard.

• Keep oil away from the fire.

• They are loading oil into the ship.

• Can you spare me a few liters of petrol?

• There is oil in hair in its natural state.

• It is only recently that crude oil has come to be used to make chemical products.