No one supposes that our choicest productions have been produced by a single variation from the aboriginal stock.

没有人设想我们精选的产物，是从它们的原种仅经一次变异而产生的。

youdao

No one supposes that our choicest productions have been produced by a single variation from the aboriginal stock.

没有人设想我们精选的产物，是从它们的原种仅经一次变异而产生的。

youdao