Pogorszenie Anglais:

How much deterioration has occurred over the past 10 years?

The deterioration of corporate earnings has yet to bottom out.

Recently, Cameron has noticed a deterioration in his relationship with his parents.

Restoring the level of available sugar in the brain had prevented the deterioration of performance.

deterioration of insulating materials

We cannot allow for any further deterioration of our country's economy.

With proper rest and medicine, we can slow down the deterioration.

Environmental deterioration

Let's stop the deterioration of the natural environment.