英语语法分析

If these silent genes are somehow switched back on, they argued, long-lost traits could reappear.

他们认为，如果这些沉默的基因以某种方式被重新激活，长期丢失的性状可能会重新出现。

And this poses a puzzle: how can characteristics that disappeared millions of years ago suddenly reappear?

这就造成了一个难题：数百万年前消失的特征是如何突然重现的？

In fact , it might reappear to the extent that scholars could make out and even decipher the original text.

事实上，它可能会重现到学者们能够辨认甚至破译原文的程度。