It IS a treasure hunt with a difference: conducted not with metal detectors, but by negotiation.

这是一次猎取珍宝的行动，但与以往有所区别：不是用金属探测器执行的，而是通过谈判。

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Then treasure hunters equipped with metal detectors-ubiquitous in britain-began to call on farmer Fred Johnson, asking permission to walk the field.

横行英国的寻宝人携带着金属探测器来到了这里。一开始，他们拜访了了农场主Fred Johnson，请求准许他们在田中寻宝。

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But archaeologists do know the consequences of rogue treasure hunters armed with metal detectors descending on a valuable site.

BBC: Watching the detectorists