New and improved varieties will inevitably supplant and exterminate the older, less improved and intermediate varieties; and thus species are rendered to a large extent defined and distinct objects.

新品种和改良品种必然取代和淘汰老品种、改良品种和中间品种；因此，物种在很大程度上被渲染为定义明确的对象。

But just in proportion as this process of extermination has acted on an enormous scale, so must the number of intermediate varieties, which have formerly existed, be truly enormous.

但是，正如这种灭绝过程的规模如此之大，以前存在的中间变种的数量也必定是真正巨大的。

I endeavoured, also, to show that intermediate varieties, from existing in lesser numbers than the forms which they connect, will generally be beaten out and exterminated during the course of further modification and improvement.

我还努力表明， 由于中间变种的数量少于它们所连接的类型，因此在进一步修改和改进的过程中通常会被淘汰和灭绝。