它也是为了揭示细菌这种无父无母的生命形式，为何能主宰地球数十亿年，而且至今还欣欣向荣。
It is also explaining why the life forms that ruled the planet for billions of years and remain by far the most abundant - the bacteria - manage fine without it.
为了与2015年米兰世博会的主题“滋养地球，生命能源”相一致，罗马尼亚为游客提供了关于其国家特点、资源和潜能的一个错综复杂的视图。
In keeping with the theme of Expo Milano 2015, Feeding the Planet, Energy for Life, Romania offers visitors an intricate view of its Country's characteristics, its resources and its potential.
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