The bridge crosses the river in a single span.

河上的桥为单跨桥。

"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。

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。

The apartment was spick-and-span.

这套公寓非常干净整洁。

The kite has a span of 1.5 metres.

风筝宽1.5米。

Managers have a wide span of control.

经理的职权范围很大。

Their house is always spick and span.

他们家总是收拾得清清爽爽。

Small children have a short attention span.

幼儿注意力持续时间短。

The batteries had a life span of six hours.

电池的使用寿命是6小时。

I worked with him over a span of six years.

我和他共事达六年之久。

These forests cover a broad span of latitudes.

这些森林绵延在多个纬度上。

Small children have a very short attention span.

幼儿的注意力持续时间很短。

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。

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。

The project must be completed within a specific time span.

这项工程必须在规定期限内完成。

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。

Our life span is restricted.

我们的寿命是有限的。

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。

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。

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。

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。

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。

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。

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。

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。

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。

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。

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。

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。

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。