For thousands of years metal items have been recycled by melting and reforming them into new weapons or tools.

几千年以来，金属物的回收是通过熔化与打造成新的武器或工具来完成的。

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Tools and weapons made of this metal are a great advance upon those made of stone or flint.

与石器相比，用这种金属做成的工具和武器是一个巨大的进步。

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By about 700 BC, Chinese metal-workers learned to make iron tools and weapons.

约公元前700年，中国的金属工人学会制作铁器工具和武器。

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The objects, including weapons and tools, were found in October in a field near Tisbury by a metal detectorist.

BBC: Bronze Age hoard found in Wiltshire field