This "once in a lifetime" event actually may take place twice in some folks' lives.

这种“生平仅见”的事件实际上有可能在一些人的生活中发生两次。

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It was a night of joy and terror, such as this man of stupendous emotions had already experienced twice or thrice in his lifetime.

这一夜是甜密的一夜，也是恐怖的一夜，正如这个感情强烈的人在过去的生活中已经经历过的那两三夜一样。

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There are truly innumerable restaurants offering a vast selection of Chinese food in its every incarnation, you could feasibly never visit the same place twice in one lifetime.

这里有数不清的餐馆酒楼提供种类繁多的中国美食，如果想把他们都尝遍那可能要花上一辈子的时间呢。

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"That kind of stuff only happens to a perfumer once or twice in a lifetime, " said Turin.

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Of course selling a fridge once or twice in the lifetime of a consumer is not the high recurrence business model of sugar-water vendors targeting impressionable children and exploiting their apetite for sugar and instant gratification.

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An experienced worker laid off when unemployment is at 9% faces a reduction in lifetime earnings nearly twice that of someone sacked when the rate is 5%: a loss of 20% on average, according to new work by Steven Davis and Till von Wachter.

ECONOMIST: An intractable problem is getting worse