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- A stratigraphic unit, especially a unit consisting of two or more formations deposited during a single geologic era. 地层学单位:地层学中的一个单位,尤指包括在同一地质时期沉积的两个或两个以上地层的单位。
- The metallizing processes of gold takes place in almost every geologic eras. 摘要金矿床几乎形成于所有地质时代，但在不同时期其矿化强度明显有别。
- of or relating to the Carboniferous geologic era. 属于或关于地质上石炭纪的。
- of or relating to the Cretaceous geologic era. 属于或关于地质上白垩纪的。
- Cainozoic) The present geological era, beginning some 65 million years ago, and divided into two periods, the Tertiary and the Quaternary. 这个时期的特点是出现了现代的生物体，特别是哺乳动物和有花植物。
- County geological formation exposed by geological era, there are 7 lines (JI), the Sinian, Cambrian, Ordovician, Silurian, Cretaceous, Tertiary, Quaternary. 地质县境地层出露按地质年代，有7个系（纪），即震旦系、寒武系、奥陶系、志留系、白垩系、第三系、第四系。
- It is above-reality because it covers a huge timespan, though not huge enough to exceed a geological era, for example, the current Fourth Glacial Period we’re in. 在当今世界，政治家之间的对话在气候变化问题上实现了新的穿越。
- My professor studies flora of the Palaeozoic Era. 我的教授研究古生代的植物群。
- Concorde inaugurateda new era in aeroplane travel. 协和式飞机开创了空中旅行的新纪元。
- Some say the computer has ushered in a new era. 有人说电脑引入了一个新时代。
- The era of the backwoods rube is gone. 落后地区乡巴佬的时代已过去了。
- We are living in the computer era. 我们正生活在计算机时代。
- His death marked the end of an era. 他的死标志著一个时代的结束。
- It's an era of the miniskirt in the seventies. 七十年代是超短裙时代。
- Neo-conservatism prevailed in the Reagan era. 在雷根当政期间,新保守主义盛行。
- The invention of the computer marked the beginning of a new era. 计算机的发明标志着一个新时代的开始。
- Today should be saluted as the beginning of a new era. 应把今天看作是一个新时代的开始来庆祝。
- A hiatus is the total interval of geologic time. 一个沉积间断是地质时间的总间隔。
- Study is made on palaeozoic conodont fossil from Bachu Uplift and Awati Depression. 5 conodont fossil assemblage zones are identified.And their geological history and geological eras are discussed. 对塔里木盆地西部巴楚断隆、阿瓦提凹陷古生代产出的牙形刺化石进行了研究，建立了5个牙形刺化石组合带，讨论了其地史分布及其地质时代。
- We are now in a great new era of information. 我们现在正处于一个新的伟大的信息时代。
