But if silent genes degrade within 6 to 10 million years, how can long-lost traits be reactivated over longer timescales?

但是，如果沉默基因在600万到1000万年内退化，那么失去已久的性状如何在更长的时间内被重新激活呢？

youdao

Imagine. A man so protective and nervous of his own reputation that he sought to keep some of the ideas he thought might alienate his public silent for 500 years.

想象一下，一个人对自己的声誉如此想要保护、如此紧张，他试图让可能使人们与自己疏远的想法沉默了500年。

youdao

For while there is something exhilarating about Nicole Kidman's whoop of joy, let no one forget the years of silent unhappiness which preceded it.

因为当我们为基德曼欣喜的呼号而感到欢欣鼓舞时，还是不要忘记离婚前那段寂静不幸的岁月吧。

youdao

Livni has remained silent for three years even though it has been clear for five years that the West's attempts to cut a deal with Teheran serve no purpose other than to provide the Iranians time to develop their nuclear arsenal.

CENTERFORSECURITYPOLICY: Israel's fateful choice

The disease killed Carson in 1964, two years after Silent Spring came out.

FORBES: But Her Heart Was Good

Mr Annan said there had been 30 years of silent hunger in Africa, where farmers exported food in the late 1960s but now only produced a quarter of the world average per acre.

BBC: Boost for Africa green revolution