Tom Mary'nin küveti temizlemesini istedi.
- Tom wanted Mary to clean the bathtub.
Küvette akan suyu var.
- He has the water running in the bathtub.
... with a bathtub with no stopper. Water comes in and water goes out. And you can see intuitively ...
... out keeps the level of the bathtub steady. Okay? That’s replacement level bathtub ...