But, as medical science has realized over the past few decades, the most prevalent cold viruses in fact do little direct harm to our cells.

但是，在过去几十年，医学上意识到实际上大多数普遍存在的感冒病毒对我们的细胞几乎没有什么危害。

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The complex dispute over sovereignty in the 1.2m square miles of sea has been simmering for decades, but has grown increasingly fractious in the past few years.

超过1.2平方英里海域的复杂领土争端问题在过去的几十年中缓慢升温，但在过去的几年里变得格外糟糕。

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But canine cognition has become a serious science in the past few decades.

但是在过去的几十年里犬的认知已经形成一门严肃的科学。

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Tottenham's alternative for athletics is to redevelop and enlarge the existing Crystal Palace stadium - the main home of the sport in the capital over the past few decades - but with only 25, 000 seats.

BBC: Olympic stadium

The Gulf may never again see the kind of quantum leap in its fortunes that has transformed it over the past few decades, but it still faces the tough choices Mr bin Byat speaks of.

ECONOMIST: Time travellers

There has been a stadium building boom the past two decades in sports, but it has largely skipped California with a few exceptions.

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