run out of steam

Translations
выдохнуться
Someone ran out of steam halfway through the project.
Кто-то выдохнулся на полпути через проект.
Definitions
To lose energy, enthusiasm, or momentum, often resulting in being unable to continue an activity or task effectively.
Words
steam

noun
пар
run

verb
бежать
run out

verb
заканчиваться