But soon this dry case bursts open, and out comes a full-grown fly.

但是很快, 这层干燥的硬壳就会破开, 爬出来苍蝇的“”。

You see, flies, as with most insects, undergo a complete metamorphosis from egg to adult via a larvae and a pupal stage.

苍蝇，大多数昆一样，经历蛹的阶段，完从卵到的完全蜕变。

And those bigger larvae resulted in bigger adults.

那些更大的导致更大的。

For one, it keeps larvae and adults from competing for the same habitats and food sources.

一方面，它可以防止争夺相同的栖息地食物来源。

Over the following weeks, her larva hatches, bores into the cockroach, eats it alive, pupates in its carcass, and emerges as an iridescent adult.

在接下里的几周内，化，钻进蟑螂的躯体，活吃蟑螂，在它的尸体中化蛹，再以的形态闪亮登场。

This lets adult and juvenile traits evolve independently from each other, since caterpillars and butterflies face totally different pressures for natural selection.

这使得的性状可以相互独立进化，因为毛蝴蝶面临着完全不同的自然选择压力。

Estimating the PMI in this case relied on analyzing the life cycle of flies through development from egg to adult can be predicted based on environmental conditions.

在这种情况下，估计 PMI 依赖于分析果蝇从卵到的生命周期，可以根据环境条件进行预测。

Insects hatch from eggs, and although some insects hatch as basically small versions of the adults of their species, others go through an incredible change before adulthood.

昆是由卵化而来的，虽然有些昆在化时，就是同类的微缩板，但有些昆在年之前会发生翻天覆地的变化。

Certain variations can only appear at corresponding ages; for instance, peculiarities in the caterpillar, cocoon, or imago states of the silk-moth; or, again, in the full-grown horns of cattle.

某些变异只能出现在相应的年龄；例如，蚕蛾的毛、茧或状态的特殊性； 或者，再一次，在牛的熟角中。

What actually happens when a caterpillar morphs into a winged marvelous adult is so flippin' cool, some of nature's most remarkable biological processes and all of that mind blowing stuff happens in this part that the book just skips over.

当毛毛变有翅膀的奇妙时，实际发生的事情是如此酷，自然界一些最非凡的生物过程所有令人兴奋的事情都发生在这一部分，这本书只是跳过了。