1·Since at least Darwin time, biologists have been trying to understand and define the mechanisms for speciation.
至少从达尔文时代开始，生物学家就一直在试图理解和定义物种形成的机制。
2·Allopatric speciation can also be brought by the imperceptibly slow but colossal movements of the tectonic plates that make up Earth's surface.
构成地球表面的那些构造板块极其缓慢但剧烈的运动，也可能导致异地物种形成。
3·That does not rule out a gradual drift to infertility as an additional explanation, but makes it possible that infertility is a consequence, rather than a cause of speciation.
这并没有排除向不孕缓慢转变的这种补充解释，但可能的是，不孕是物种形成的结果，而非原因。
4·Researchers say the phenomenon provides evidence that differences in sensory perception — not just geography — can spark speciation.
研究人员说，这种现象提供证据证明在感官的感觉上的差异——不仅仅是地理位置——可能导致物种形成。
5·Then, sometime between 1.3 million and 2 million years ago, carnation speciation exploded.
然后，大约是在1300,000年至2000,000年前，石竹科物种形成爆发了。