Their molecular clock data suggest a much earlier speciation, perhaps prompted by the breakup of the ancient supercontinent of Gondwana around 120 million years ago.

他们的分子钟数据证实更早的时候就出现了物种分化，可能是1亿2千万年前冈瓦纳古陆的破裂引发的。

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Especially in the bus design on the backplane, we should pay more attention to the distribution, interconnection of the clock, data line.

背板上的总线时钟和数据线的分布，互连设计显得尤为重要。

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The workings of most chips are governed by a clock and the data processing they do advances with each tick of that time-keeper.

BBC: Mistakes in silicon chips to help boost computer power

Service Metrics watched auction sites for three months around the clock, using data collection agents around the country running standard Netscape or IE browsers and a T1 connection.

CNN: Gavel down: Yahoo's auctions are the speediest

With 50 seismic vessels working around the clock industry-wide, this adds up to a total of around 12 petabytes of new data every year, according to Mr Walker.

ECONOMIST: Inside story