tái​zhù

mainstay

台柱 (臺柱) tái​zhù
mainstay noun
a person or thing that acts as the chief support or primary pillar of an organization or group
star performer noun
the leading actor or most prominent member of a theatrical troupe or performance group

Frequency

Movie subtitles
0.210 per million appears in 0% of films
Written text
0.199 per million

Sources

Definitions
CC-CEDICT