playground

n.

操场，尤指提供如秋千等设备的户外场地；游乐场；（某些集体聚会游乐的）园地；

复数：playgrounds

1. The students are playing on the playground.
   学生们正在操场上玩。
2. The children were taking turns on the slides in the playground.
   孩子们在操场上轮流滑滑梯。
3. He sat on the playground listening to the distant croak.
   他坐在操场上，聆听远处的蛙鸣。
4. There are more than five hundred people on the playground.
   运动场上有五百多人。
5. I would rather hoe in the garden than run about on the playground.
   我宁愿在花园锄草，也不愿在运动场上跑来跑去。
6. The South of France is the playground of the rich.
   法国南部是富人的游乐场所。

Digital labor: the internet as playground and factory
Reducing Playground Bullying and Supporting Beliefs: An Experimental Trial of the Steps to Respect Program.
The rhizosphere: a playground and battlefield for soilborne pathogens and beneficial microorganisms
The effect of multicolor playground markings on children's physical activity level during recess.
Long-term effects of a playground markings and physical structures on children's recess physical activity levels.
Cyberspace as Potential Space: Considering the Web as a Playground to Cyber-Flirt
The natural environment as a playground for children : Landscape description and analyses of a natural playscape
The Natural Environment as a Playground for Children: The Impact of Outdoor Play Activities in Pre-Primary School Children
Promoting children's physical activity in primary school: an intervention study using playground markings
Maternal and paternal disciplinary styles: Relations with preschoolers' playground behavioral orientations and peer status.