More than one-quarter of the world's oil and almost one-fifth of the world's natural gas come from offshore, even though offshore drilling is six to seven times more expensive than drilling on land.

全球超过四分之一的石油和近五分之一的天然气来自近海，尽管近海钻探的成本是陆地钻探的六到七倍。

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The economy is probably in its fifth quarter of recession and the Royal bank of Canada thinks the New Zealand central bank may have to resort to foreign-exchange intervention.

该国的经济很可能处于进入衰退的第五个季度，加拿大皇家银行认为，新西兰央行逼不得已可能也会诉诸于外汇干预。

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But they are also more susceptible to depression: a fifth to a quarter of women experience depression at some point in their lives, compared with around a tenth of men.

但是她们更容易抑郁：五分之一到四分之一的女人会在人生的某一时刻经历抑郁，而男人抑郁的比例仅为十分之一左右。

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