ebb and flow

Translations
приливы и отливы
The ebb and flow of the market can be unpredictable.
Приливы и отливы рынка могут быть непредсказуемыми.
Definitions
Ebb and flow refers to the recurring pattern of movement or change, often used to describe the rise and fall of tides, but can also metaphorically represent the fluctuations in various situations, emotions, or circumstances in life.
Words
ebb

noun
отлив
and

conjunction
и
flow

noun
прилив