当我们在操场上正玩的开心时,铃响了.用英语怎么说
问题描述：
当我们在操场上正玩的开心时,铃响了.用英语怎么说
答
The bell rang when we were playing happpily on the playground.
答
The bell was ringing when we had fun on the playground.
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答
When we were playing happily on the playground,the bell rang