tì​bǔ

substitute

替补 替補 tì​bǔ
substitute noun
a person or thing that acts as a replacement or substitute; a bench player in sports

When you’re on the bench you have to wait for your opportunity.

to replace
to replace or substitute for something or someone, such as replacing a damaged part, filling a vacancy, or substituting for a player in a game

Frequency

Movie subtitles
4.05 per million appears in 2% of films
Written text
15.0 per million

Sources