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1·No one knows how many people currently surf the Net.

没人知道现在有多少人在网上冲浪。《柯林斯英汉双解大词典》

2·No one knows where the tomb is.

这座墓没有人知道在哪儿。

3·No one knows what robots will be able to do in the future.

没有人知道未来机器人能做什么。

4·No one knows your crafts like you do.

没有人比你更了解你的手艺。

5·No one knows why they were painted there.

没人知道为什么它们会被画在那里。

6·No one knows when they were first planted.

没有人知道它们是什么时候被种植的。

7·No one knows exactly how the pyramids were built.

没有人确切地知道金字塔是如何建造的。

8·No one knows how the dog got to a different state.

没人知道这只狗是怎么到达另一个州的。

9·No one knows what she might be doing now, but not washing up, that's for sure.

没人知道她现在在干什么，但肯定不是在洗餐具。

10·They've asked every animal, too, for miles around, and no one knows anything about him.

他们问了方圆几里的所有动物，可是没有人了解他的情况。