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1·These episodes of rapid evolution are separated by relatively long static spans during which a species may hardly change at all.

这些快速进化的阶段被相对较长的静态跨度分隔开来，在此期间，一个物种几乎不会发生任何变化。

2·The world's largest existing marine reserve, established last year by the British government in the Indian Ocean, spans 554,000 km2 and is a no take zone throughout.

去年，英国政府在印度洋建立了世界上现存最大的海洋保护区，跨越55.4万平方公里，整个保护区均是禁渔区。

3·In addition, new digital technologies have allowed more rapid trading of equities, quicker use of information, and thus shorter attention spans in financial markets.

此外，新的数字技术已使得股票交易更迅速、信息使用更快捷，且因此使得金融市场中注意力的时间跨度更短暂。

4·Travellers get from one side to the other by walking across a footbridge that spans a little stream.

旅游者通过一座横跨小溪的人行桥从一边走到另一边。《柯林斯英汉双解大词典》

5·Geographic isolation also can proceed slowly, over great spans of time.

地理隔离也可能在很长一段时间内进展都非常缓慢。

6·Completely Geographic isolation also can proceed slowly, over great spans of time.

完全的地理隔绝也可能在很长一段时间内缓慢地发展而成。

7·The technologies themselves, and their makers, are the easiest suspects to blame for our diminishing attention spans.

技术本身，以及它们的制造者，最容易被怀疑是造成我们注意力持续下降的罪魁祸首。

8·From end to end, the Milky Way's starry disk, observable with the naked eye and through optical telescopes, spans 120,000 light-years.

从一端到另一端，银河系布满星星的圆盘横跨12万光年，可以用肉眼和光学望远镜观察到。

9·Because of longer life spans, Americans are also boosting their savings to preserve their nest eggs, the TD Ameritrade study showed, which surveyed 2,000 adults between 40 to 79.

德美利证券公司的该项研究调查了2000名40至79岁的成人，研究表明，由于寿命延长，美国人也在增加储蓄以留存养老储备金。

10·Architecting spans many disciplines.

软件架构跨越很多学科。

(1)life span寿命；使用期限

(1)long span长跨度

(1)time span时间跨度

(1)span length跨度距离；杆间距离

(1)attention span注意广度；注意力的持续时间

(1)long span bridge长跨桥；大跨径桥