正如动物被岩石掩埋一样，这些病毒被困在其宿主的基因组里，而其自由生存的亲缘在不断地进化，它们实际上被时间冻结了。
Just as animals get buried in rock, these viruses become trapped in the genomes of their hosts. While their free-living relatives continue to evolve, fossil viruses are effectively frozen in time.
福特在信贷市场冻结之前储备好了资金，这才使自己免遭底特律另两大汽车制造商一样破产的命运。
Ford escaped the fate of the other two Detroit carmakers by tapping credit markets just before they began to freeze over.
提供这项业务的公司打算用储蓄来放贷，因为资金会被冻结一段时间，就像提供担保产品一样。
Providers looking to base some lending on deposits also like commitment products, since the money is locked in for some time.
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