The average velocity ratios are very steady, whatever in the long time scale or large spatial scale.

无论是从较长的时间尺度还是从较大的空间范围来看，平均波速比值都是非常稳定的。

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This is the first study to attempt a comprehensive global look at plankton changes over such a long time scale.

这是第一次意在全面观察全球海洋浮游生物在如此长时间里所产生的变化的研究。

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If explore for the earth with long time scale, the earth changes may emerge from solar system, and the earth catastrophisms may emerge from Galactic System.

从长时间尺度看，在地球绕太阳运动过程中会涌现出全球变化特性；

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But the venture world has learned some hard lessons on the difficulty of building energy businesses: they face science risk, often take a long time to scale and can be capital intensive.

FORBES: Going Green: Investing In Consumer Focused Energy Tech

The electricity distributor said problems had not been on this scale for a long time.

BBC: NEWS | UK | England | Power cuts following bad weather

The auto industry has been working on so-called V2V technology for a long time but this is the first large-scale test to see how well it works in the real world.

FORBES: Get Ready For Talking Cars That Don't Crash And Get You To Work On Time