center field (US) noun
or British centre field
or British centre field
Learner's definition of CENTER FIELD
[noncount]
: the part of the baseball outfield between right field and left field(棒球)中外野,中外场 also : the position of the player defending center field中外场手防守位置
— center fielder
(US) or British centre fielder noun, plural center fielders [count]