一般现在时：We go downstairs,but find nothing.一般过去时：We went downstairs,but found nothing.满意望采纳。谢谢。：）
Can not you find it out?亲，希望我的回答能令你满意
未被发现这个词语用英语表达翻译为 : undiscovered;Undetected
Don't you find out?
Didn't you find？
It's just that you didn't find out yet.
We went downstairs but we found nothing.
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楠木青城……
