Faith Lapidus has more. Mark White built his first non-American playground in Poland.

VOA: special.2010.11.05

in the cafeteria when they're eating lunch, on the playground.

在餐厅吃午餐的规矩，和在操场的规矩。

驯服淘气的人 - SpeakingMax英语口语达人

Have you ever looked at children in the playground?

你有没有看到在操场上的孩子们

耶鲁公开课 - 生物医学工程探索课程节选