be getting/running low
The gas is running/getting low.
We're running low on food; I'm going to get some at the supermarket.
A: Let's stop for a rest, I'm exhausted.
B: Me too. I also need to apply some insect repellent and drink some water.
A: What an amazing view. The scenery is so spectacular.
B: Yeah, I wish we could do this more often. No bosses to tell us what to do and no deadlines to meet.
A: Hey, is this your favorite hiking trail?
B: Nah, I prefer difficult trails that are steep and challenging. This one is too easy for my liking.
A: I'll check the map to see if there is a stream up ahead. I'm getting low on water.
B: Okay, hey, what time did you tell the ranger we would be back by?
A: Six o'clock——that's an hour before sunset。
B: Then we should head off. Otherwise, we'll be late.