English ⇄ Russian

firn is preserved due to the accumulations of the previous colder years rich in snow stresses
Makarov.	фирн сохраняется за счёт накопления предыдущих более холодных и снежных годов

firn is preserved due to the accumulations of the previous colder years rich in snow: 2 phrases in 1 subject

Makarov

2