To date, it has been unclear to what extent organic, carbon-containing material remains on lake bottoms, as opposed to being broken down.

迄今为止，还不清楚有多少含碳有机物未被分解存留在湖底。

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But the extent of becoming warm has not broken the temperature departure value of warm winter appearing in early 50s.

但其变暖的程度尚未打破50年代前期曾出现过暖冬年的月平均气温距平极值。

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Rooney's relationship with Ferguson has broken down to such an extent that the 24-year-old has informed Manchester United he has no plans to sign another contract.

鲁尼和弗格森的关系已经破裂，这位24岁的球员表示自己没有意愿与曼联续约。

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The researchers had looked "very carefully" to see the extent to which the DNA was being broken down.

BBC: GM crops

Though British agents did not carry out the abuse themselves, the evidence suggests they knew the extent of Mr Mohamed's maltreatment before one of their number flew out to ask the broken man a few questions of their own.

ECONOMIST: ��Torture�� secrets revealed