1、 Perhaps willfully, it may be easier to think about such lengthy timescales than about the more immediate future.
可能有人固执地认为，考虑如此长的时间跨度可能比考虑即将到来的未来更容易。
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2、 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？
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