時の流れ
Meanings
1
flow of time; passage of time
Refers to the continuous, unstoppable movement of time. Often used in poetic or reflective contexts.
Time flies.
With the passage of time, the town's scenery also changed.
2
current of the times; trend of the times
Refers to the prevailing mood, fashion, or direction of an era. Less common than sense 1.
It's hard to go against the current of the times.