制造和利用工具是人类区别于其他动物的重要特征，然而最近英国的一项科学研究却发现，在这一点上人类其实并不孤单，新苏格兰乌鸦天生就具有一种制造和使用工具的能力。

Birds may not be renowned for their intelligence but New Caledonian crows have an instinctive ability to make and use tools, researchers said on Wednesday.

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工具和模具制造商，使用各种金属，合金和塑料，修理和修改需要精确尺寸的定做，原型或专用工具，模具，工模，夹具和量具。

Tool and die makers make, repair and modify custom-made, prototype or special tools, dies, jigs, fixtures and gauges using various metals, alloys and plastics which require precise dimensions.

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制造和使用工具曾一度被认为是人类所特有的本领，但现在我们了解到，某些种类的动物也会制造和使用工具——尽管这样的动物似乎比较少见。

The manufacture and use of tools was once believed to be uniquely human, but we now know that we share this ability with some animal species, although it seems rare.

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