they are in the playground
他们在操场上
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They are in the playground.
他们在操场上。
youdao
The adjustable shelf system also works as the playground for his cats. They can jump in between shelves, which are staggered at different heights, and rest on them.
可调节的架子也可以作为猫的游乐场所。他们可以在不同高度交错的架子之间跳来跳去，或者在上面休息。
They are not on the playground but in the classroom.
他们不在操场，而是在教室。
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