因阿斯特拉·捷利康astra Zeneca公司得名，以旌表他们主要基地阿尔·德利园建园50周年，有不少药品是在阿尔·德利园区发现并开发的。
It's named for the company, Astra Zeneca, to mark the 50th anniversary of their major facility Alderley Park where important medicines have been discovered and developed.
2008年7月1日是达尔文自然选择理论诞生150周年纪念日，该理论首次发现了自然选择是生物进化的主要推动力量。
July 1, 2008, is the 150th anniversary of the first announcement of his discovery of natural selection, the main driving force of evolution. Since 2009 is the 200th anniversary of Darwin's birth Feb.
各离子的周年变化主要是受补充的外源水影响；
The annual change of ions was mainly influenced by the contents of ions from exotic waters.
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