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。
5. 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。
