big shoes to fill

Translations
большие туфли, которые нужно заполнить
After the CEO retired, he had big shoes to fill.
После ухода генерального директора на пенсию, ему предстояло заполнить большие туфли.
Definitions
A phrase used to describe a situation where someone is taking over a role or position previously held by someone who was very successful or highly regarded, implying that it will be difficult to match their achievements or reputation.
Words
big

adjective
большие
shoes

noun
обувь
to

preposition
чтобы
fill

verb
заполнить