In a world where the largest social unit is the tribe, clan or what-you-will of a few hundred people, your neighbours and your other Allies will normally look a lot like you, and act similarly.

在一个最大的社会单位是部落、宗族或你作为一员的几百人团体的社会里，你的邻居和其他同盟者通常看起来都非常像你，而且行为相似。

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The agile development cycle allowed the system test team to act like a real customer, from the application design right through coding and unit testing of the system test application.

敏捷的开发周期允许系统测试团队扮演实际的客户，从应用程序设计到系统测试应用程序的编码和单元测试。

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All of these cartilages are bound together by a continuous perichondrium, which gives stability to the cartilages and causes them to act as a single structural and functional unit.

所有这些软骨均由连续的软骨膜连接到一起，它提供了软骨的稳定性，也是它们能作为一个单一的结构和功能单位的原因。

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This conclusion followed hard on the heels of an external inquiry and reports from the Mental Health Act Commissioners, both of which were positive about the new unit that had replaced Garlands Hospital where the abuse took place.

BBC: NHS inspectorate shows its teeth

MSPs passed The Alcohol (Minimum Pricing) (Scotland) Act 2012 in May 2012, setting a 50p minimum unit price as part of an effort to tackle alcohol misuse.

BBC: Study claims minimum pricing cuts alcohol-related deaths

The premium isn't actually that great - it costs just under 11p a unit - and this one small act will contribute more to reducing the carbon emissions of my home than anything else I have done this month.

BBC: 28 MARCH