A: Does this hotel have a pool?
B: I'm sorry, sir, we don't have one. However, in our gym, we do have swim stations.
A: I'm not sure I understand.
B: Think of a deep bathtub that you can swim in, but against a current.
A: Cool. What will they think of next? How much are they?
B: Sir, guests pay nothing to use the stations.
A: Excellent! Now what are the hours?
B: The gym is open 24/7, but the stations are open from 7 a.m. to 10 p.m. only.
A: I'm going to change into my trunks right now!
B: I think you'll like the experience, sir. It's a great workout.
n. (水、气、电)流,趋势
adj. 流通的