spare no effort

Traduzioni
не жалеть усилий
They spared no effort to make the event successful.
Они не жалели усилий, чтобы сделать мероприятие успешным.
Definizioni
To make every possible effort or to do everything one can to achieve a goal or complete a task.
Parole
effort

noun
усилие
spare

verb
пощадить