On atavism the Machine can have no mercy.

对于返祖现象，大机器绝不会有所怜悯。

In other words, metamorphosis in mole salamanders is an atavism.

换句话说，鼹鼠蝾螈就是返祖。

The atavism passed and he walked the room still, stopping from time to time to look at the telegram.

返祖现象过去了， 仍然在房间里走着， 不时停下来看看电。

If for any reason this does not happen, the ancestral feature may not disappear, leading to an atavism.

如果因为某个原因这种现象没有发生，这种祖先特征就可能不会消失，产生返祖。

We sometimes call it an atavism, and that term is usually used for something that has missed a few generations or something that pops up due to an interesting recombination of genes.

我们有时称之为返祖现象，该术语通常用于指错过几代东西或由于有趣基因重组而弹出东西。