Küvette akan suyu var.
- He has the water running in the bathtub.
Tom küveti sıcak su ile doldurdu.
- Tom filled the bathtub with hot water.
... with a bathtub with no stopper. Water comes in and water goes out. And you can see intuitively ...
... come in per minute is less than the amount being drained out, the level in the bathtub ...