a large area of grass, usually with lines marked on it, where people play sports and games 运动场；操场 the school playing fields 学校的运动场 The school's playing fields offer facilities for tennis, football, hockey and athletics. 学校的运动场有网球、足球、曲棍球和田径等运动设施。 people walking their dogs on the school's playing field 在学校运动场上遛狗的人
Idioms
a level playing field
a situation in which everyone has the same opportunities 人人机会均等
level the playing field
to create a situation where everyone has the same opportunities 人人机会均等