碳氢化合物的沉淀，如石油、煤、天然气等，由古代生物衍生而成，经过开发后用作燃料。
A hydrocarbon deposit, such as petroleum, coal, or natural gas, derived from living matter of a previous geologic time and used for fuel.
这里的鲨鱼探险包括一个和专家一起了解这些古代生物的探知之旅，还包括了解水族馆工作人员怎样饲喂和照料这些生物。
Its shark adventure includes a tour with an expert to learn about these ancient creatures and how the aquarium workers feed and care for them.
一种碳的天然放射性同位素，原子量为4，半衰期为5，780年，用于测定古代生物标本，地质标本或考古遗迹的标本的年代。
A naturally radioactive carbon isotope with atomic mass 4 and half-life 5,780 years, used in determining the age of ancient organic, geologic, or archaeological specimens.
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