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The Cambrian explosion
Diversification变化;多样化
We encourage diversification in the school system. 我们鼓励办学模式有多元化的发展。
Multicellular 多细胞的
What genetic change allowed multicellular animals to come into existence remains obscure. 什么样的遗传突变产生了多细胞动物还不清楚。
That makes up multicellular organisms. 这构成多细胞生物。
Fossilize 使成化石;僵化
The most important parts, the flowers, rarely fossilize. 最重要的部分，即花朵，很少成为化石。
The little animals fossilized and are now embedded in the limestone. 这个小动物变成化石后并嵌入在石灰石里。
Needs change while policies fossilize. 需要发生改变，但是政策僵化不变。
Discourage 使气馁
He is easily discouraged by difficulties and obstacles. 他遇到困难和阻碍就容易泄气。
Decomposition 分解;腐烂
Warmer weather meant the decomposition of the corpse. 天气变暖会使尸体腐烂。
The dehydration process leads to fairly extensive decomposition of the product. 脱水过程会导致产物相当程度的分解。
Exclusively 排它地;独占地
This room is exclusively for women. 这房间只对女士开放。
The star has a ski slope reserved exclusively for her. 这位明星有一个专门留给她的滑雪场地。
Distribution 分发;分配
The conference discussed the fair distribution of income and wealth. 会议讨论了公平分配收入和财富的问题。
Locale 场所;现场
Premier Wen Jiabao commands the earthquake locale in person. 。
The director is looking for a suitable locale for his new film. 导演在为新片物色合适的拍摄场地。
Cambrian寒武纪的
One of the greatest mysteries of the history of life is the Cambrian explosion. 寒武纪的大爆炸是生命史中最大的谜团之一。
During the Cambrian explosion, major paradigm shifts took only tens of millions of years. 在寒武纪生命大爆发期间，主要模式转化只用了数千万年的时间。
Precambrian 前寒武纪
Precambrian era 前寒武纪时代
距今约40亿年到5.43亿年前的一段地质时期。这一时期代表了约80%的地质记录，因此提供了各大陆如何通过时间发生演变的重要史料。
Detritus 碎石;碎屑
Detritus usually consists of gravel, sand and clay. 岩屑通常是由沙砾、沙和粘土组成的。
Algae 水藻
Most algae live in water. 多数藻类生长在水中。
The green covering on top of the water in the pond is algae. 池塘水面上绿色的东西是水藻。
Arthropod 节肢动物
节肢动物包括100多万种无脊椎动物。比如昆虫、蜘蛛、蟹