fáng​huǒ

to prevent fire

防火 fáng//huǒ
to prevent fire verb + noun
to take precautions against fire; to prevent fires from starting

First thing I did was make sure the building was fireproof.

fireproof
To be resistant to fire; fireproof; heat-resistant.
fire prevention
measures or efforts taken to prevent fires from starting

Frequency

Movie subtitles
2.44 per million appears in 1% of films
Written text
6.62 per million

Sources