playground 基本解释
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

playground 用法和例句
What worked on the playground is effective all over again .
在操场上行之有效的办法在这里依然有效。

Is it a dangerous playground for fragile souls ?
那里是脆弱灵魂的危险游乐场吗？

They might be perfectly satisfied with an occasional trip to the playground .
它们也许刚好满足你临时去趟运动场的需求。

These comments reveal just how defining playground experiences can be .
这些读者来信展现了操场上的活动有多么重要。

Don 't be a bystander at the playground this summer .
这个夏天不要再站在操场边，当一个旁观者了。