This is the 14908th most frequent Russian word.
подвергалась
"Was subjected to" or "underwent."
The usage of 'подвергалась' refers to the passive reception of an action, in this case pollution, illustrating the impact on the subject.
Река подвергалась загрязнению из-за сброса отходов.
The river was subjected to pollution due to waste discharge.
The word 'подвергалась' here is used in the past tense to describe being subjected to or experiencing challenges, emphasizing the passive nature of the subject's experience.
В течение своей жизни она подвергалась многочисленным испытаниям.
Throughout her life, she was subjected to numerous challenges.
Here, 'подвергалась' conveys the passive past action of undergoing repairs, highlighting the frequency and inevitability.