kāi​zú​mǎ​lì

accelerate

开足马力 (開足馬力) kāi​zú​mǎ​lì
accelerate expression
to accelerate at full power or operate a vehicle or machine at full speed
exert expression
to work as hard as possible or go all out to complete a task

Frequency

Movie subtitles
0.540 per million appears in 0% of films
Written text
0.567 per million

Sources

Definitions
CC-CEDICT