span

1. The bridge crosses the river in a single span.: 河上的桥为单跨桥。

2. "With the first subject, after about 20 hours of training, his digit span had risen from 7 to 20," Ericsson recalls.: “对于第一个实验对象，经过大约20小时的训练，他的数字跨度从7上升到20。”爱立信回忆道。

3. This in itself is an almost incomprehensible span of generations, and one that makes Australia's rock art the oldest continuous art tradition in the world.: 这本身就是一个几乎难以理解的跨越几代人的过程，这使得澳大利亚的岩石艺术成为世界上最古老的持续的艺术传统。

4. The apartment was spick-and-span.: 这套公寓非常干净整洁。

5. The kite has a span of 1.5 metres.: 风筝宽1.5米。

6. Managers have a wide span of control.: 经理的职权范围很大。

7. Their house is always spick and span.: 他们家总是收拾得清清爽爽。

8. Small children have a short attention span.: 幼儿注意力持续时间短。

9. The batteries had a life span of six hours.: 电池的使用寿命是6小时。

10. I worked with him over a span of six years.: 我和他共事达六年之久。

11. These forests cover a broad span of latitudes.: 这些森林绵延在多个纬度上。

12. Small children have a very short attention span.: 幼儿的注意力持续时间很短。

13. These changes have occurred over a long time span.: 这些变化经过了很长一段时间才形成。

14. It is a very pretty butterfly, with a 2 inch wing span.: 它是一只非常漂亮的蝴蝶，翅膀张开有2英寸宽。

15. The project must be completed within a specific time span.: 这项工程必须在规定期限内完成。

16. His ability to absorb information was astonishing, but his concentration span was short.: 他吸收信息的能力让人惊讶，但他的注意力持续时间很短。

17. Our life span is restricted.: 我们的寿命是有限的。

18. Every organism has a life span which is highly characteristic.: 每个生物体的生命周期都极其独特。

19. The expected life-span of Beijing residents has gone up to 75.: 北京居民的预期寿命已经达到75岁。

20. The images that survive in this part of the world span at least 20,000 years.: 在这个地区保存下来的图像至少有2万年的历史。

21. Most of the improvements in life span are the result of preventive, rather than treatment.: 大多数寿命的延长是预防的结果，而不是治疗的结果。

22. Thus they are not able to "experience life" and so they attain a high life span in captivity.: 因此，他们不能“体验生活”，从而在囚禁中获得了较长的寿命。

23. Nevertheless, a restricted life span, ageing, and then death are basic characteristics of life.: 然而，有限的寿命、衰老和死亡是生命的基本特征。

24. Experience will show that to live in this way not only increases the life span but is also very healthy.: 经验会表明这样的生活方式不仅能延长寿命，而且是非常健康的。

25. Long-living women are also more likely to be sympathetic and cooperative than women with a normal life span.: 与寿命处于正常范围内的女性相比，长寿女性更有可能具有同情心和合作精神。

26. The results add to a growing body of evidence that certain psychological factors may predict a longer life span.: 有越来越多的证据表明，某些心理因素或许能预示更长的寿命，这些结果进一步证实了这一点。

27. In comparison to the life span this relationship is "inverted": the larger the organism the lower its metabolic rate.: 与寿命相比，这种关系是“反向的”：生物体越大，其代谢率越低。

28. Like the life span, the metabolic rate has for different organisms a fixed mathematical relationship to the body mass.: 就像寿命一样，不同生物的新陈代谢率与身体质量有着固定的数学关系。

29. These stages will span sectors, take people to different cities, and provide a foundation for building a wide variety of skills.: 这些阶段的经历将涵盖多个行业，把人们带到不同的城市，并为培养各种各样的技能奠定基础。

30. There are striking differences in life span between different species, but within one species the parameter is relatively constant.: 不同物种之间的寿命存在显著差异，但在同一物种内，这一参数是相对稳定的。

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