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The Polish nation began to form into a recognizable unitary and territorial entity around the middle of the 10th century under the Piast dynasty.

大约在10世纪中期的Piast王朝时期，波兰民族开始形成了统一的整体和国家。

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The first and second regions are either directly or indirectly joined by solid state welding to form a unitary fluid conducting replacement part.

第一与第二区域通过固态焊接既可直接地也可间接地结合，以形成整体的流体传导置换部件。

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The last local election was held in Wiltshire four years ago, when the county council and North Wiltshire, Kennet, Salisbury and West Wiltshire district councils came together to form a unitary authority - Wiltshire Council.

BBC: Wiltshire