国宝一级的文物绝不允许出国，而其他所有文物都要根据其重要程度进行分类，而且任何一次展会的展出品中，顶级文物所占比例最多只能是20%左右。

National treasures are never loaned; everything else is categorised according to its perceived importance. The proportion of the best work that is given to any one show is limited to around 20%.

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这一级别可用于如下情况，环境传感器数据，丢失一次读记录无所谓，因为不久后还会有第二次发送。

This level could be used, for example, with ambient sensor data where it does not matter if an individual reading is lost as the next one will be published soon after.

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2006年的10月22日，迈克尔·舒马赫驾驶了他第250次也是最后一次一级方程式赛车。

October 22nd,2006, Michael Schumacher drives his 250th and last Formula 1 Race.

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In the Basel I there were Tier I capital requirements and they defined Tier I capital as capital in a certain form -it's stockholders equity plus preferred stock.

第一次巴塞尔协议提出了一级资本要求,他们将一级资本定义为,一种特定形式的资本金,就是股东权益加上优先股

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