We were all in a puzzle about his latest disappearance.

我们都对他最近的失踪困惑不解。

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The firemen were in a puzzle about the cause of the fire.

消防队员对这场火灾的起因困惑不解。

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When we watch a person running about looking for something in a field, the wise man can set a puzzle for all the spectator to solve: what has that person lost?

当我们看见一个人在一片田野里跑来跑去在寻找东西时，智者可以弄出一个难题给一切旁观者去解答：那个人失掉了什么东西呢？

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With 500 shards of pottery alone to be washed, catalogued and interpreted, Ms Charlton is still in the midst of completing a "giant jigsaw puzzle" about the house's history.

BBC: Unlocking secrets from Jane Austen's Steventon home