像麻雀，画眉，莺等专门吃昆虫 的鸟类突然进化成吃水果。
You havethese birds -- sparrows, thrushes, warblers and such -- that haveevolved very specialized beaks for eating insects suddenly switching tofruits.
在每一次物种大灭绝后，都有一次突然的进化爆发，因为会有新物种出现来填补灭绝创造的生态位。
Following each mass extinction, there is a sudden evolutionary burst as new species develop to fill the ecological niches opened by the event.
这并不是突然的，而是一个过程，那是个缓慢的人格进化过程。
Still, it wasn't abrupt, it was gradual, it was a slow evolution of the personality.
于是天空就突然成了新的限制因素，从而触发了新一轮的进化过程。
Suddenly the skies were quite literally the limit, triggering a new evolutionary burst.
几百万年前，猛犸象从非洲大陆向北迁徙到欧亚大陆上，第四纪冰川期突然袭来，它们除非保持体温，否则只有死路一条，为此他们退化了尾巴和用来散热的大耳朵，而且进化出厚厚的皮毛。
A couple million years ago, mammoths migrated north from Africa to colonize Eurasia. Sometime around then a massive ice age kicked in—and it was stay warm or die.
它意想不到的进展突然引来了问题，人类如何开始进化。
Its unexpected development suddenly called into question how human evolution had occurred.
如果间日疟原虫进化到可以影响不表达达菲蛋白的红细胞，那么突然之间，这片大陆上就会有很多人可能患上了一种新的虐疾病。
If Plasmodium vivax is evolving to learn how to infect the Duffy-negative red cell, then a large continent of people suddenly becomes susceptible to a new form of malaria.
这并不是突然的，而是一个过程，那是个缓慢的人格进化过程。
Still, it wasn't abrupt , it was gradual, it was a slow evolution of the personality.
这并不是突然的，而是一个过程，那是个缓慢的人格进化过程。
Still, it wasn't abrupt , it was gradual, it was a slow evolution of the personality.
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