Most birds have to fly long distances to migrate.
大多数的鸟类不得不飞行很长的距离进行迁徙。
He developed a mathematical formula describing the distances of the planets from the Sun.
他提出了一个描述各行星与太阳之间距离的数学公式。
The group is working to promote the adoption of broadband wireless access over long distances.
该集团正在致力于推广远距离宽带无线访问的采用。
The bat judges distances by a kind of echo-location.
蝙蝠用一种回声测定法来判断距离。
The parallax principle can be extended to measure the distances to the stars.
视差原理可以扩展到测量地球到恒星的距离。
No-one had found a way to calculate accurate distances to the planets from the Earth.
还没有人找到方法来计算从地球到行星的精确距离。
Vision is used by micro bats to travel over long distances beyond the range of echolocation.
微型蝙蝠利用视觉进行超出回声定位范围的长距离飞行。
Driving through snowstorm on icy roads for long distances is a most nerve-racking experience.
在冰天雪地的道路上长距离驾车穿过暴风雪是一种最惊心动魄的经历。
Roman pottery was transported not only in large quantities but also over substantial distances.
罗马的陶器不仅运输量大，运输距离也很遥远。
In forests, visual signals can be seen only at short distances, where they are not obstructed by trees.
在森林中，视觉信号只能在没有树木遮挡的地方在短距离内被看到。
More consumers travel longer distances to and from work, which also makes out-of-home advertising effective.
越来越多的消费者通勤的距离越来越远，这也使得户外广告的效果更好。
First of all, because food travels such long distances, we need more planes, trucks and ships to move the food.
首先，因为食物运输的距离太长，我们需要更多的飞机、卡车和船只来运送食物。
There are, of course, animal species that require large areas of habitat, and some migrate over very long distances.
当然，有些动物物种需要大面积的栖息地，有些则需要长途迁徙。
A transportation expert told the reporter that job growth likely plays a part as well, along with some people driving longer distances to and from work.
一位交通专家告诉记者，就业的增长可能也起到了一定作用，再加上一些人通勤距离加长。
Less colorful birds and animals that inhabit the rain forest tend to rely on forms of signaling other than the visual, particularly over long distances.
热带雨林中居住的不那么鲜艳的鸟类和动物，往往依赖于视觉以外的信号形式，尤其是长距离的信号。
In arid and semiarid regions, on the other hand, the small number of lakes and the great distances between them reduce the possibilities for correlation.
另一方面，在干旱和半干旱地区，湖泊数量少，湖泊之间距离远，减少了相互关联的可能性。
Less colorful birds and animals that inhabit the rain forest tend to rely on other forms of signaling other than the visual, particularly over long distances.
生活在雨林中、且色彩并不那么亮丽的鸟类和动物往往依赖于视觉信号以外的其他信号形式，尤其是在传递长途信号的情况下。
Near cities, the air scatters the glare from lights, producing an illumination that hides the faintest stars and limits the distances that can be probed by telescopes.
在城市附近，空气会散射出灯光的强光，产生了一种照明，将最暗的星星隐藏起来，限制了望远镜能探测到的距离。
Further evidence for persistent internal rhythms appears when the usual external cycles are shifted—either experimentally or by rapid east-west travel over great distances.
进一步的证据表明，当通常的外部循环被改变时——无论是通过实验还是通过快速的东西方向的长距离移动——就会出现持久的内部节律。
Today's globally networked media and communication system has its origins in the 19th century, when, for the first time, messages were sent electronically across great distances.
现代的全球网络媒体和通信系统起源于19世纪，当时信息第一次以电子方式远距离传送。
And with certain other migrating species, the challenge is complicated further—by vastly greater distances traversed, more jurisdictions, more borders, more dangers along the way.
对于某些其他的迁徙物种来说，挑战变得更加复杂——因为跨越的距离更大、管辖范围更广、边界更广、沿途的危险也更多。
Ms. Harrison, who's from England, didn't have much experience in rowing long distances.
哈里森女士来自英国，在长距离划船方面没有太多经验。
Instead, petrol cars became more popular because they could travel longer distances without stopping.
相反，汽油车变得更受欢迎，因为它们可以在不停车的情况下行驶更远的距离。
Triathlon is a race in which each person swims, rides a bicycle and runs over very long distances.
铁人三项是一项比赛，每位选手需要完成长距离的游泳、骑自行车和跑步项目。
Today's spaceships are fine for getting things into space, but they are not so good at travelling long distances.
现在的宇宙飞船可以把东西送入太空，但它们不太适合远距离飞行。
Earlier research has found that they flow over long distances and into our oceans, hurting ecosystems along the way.
早期的研究发现，它们流过很长的距离后汇入海洋，会损害沿途的生态系统。
This is the fastest EMU train running for long distances in China, the top speed of which could reach 350km/h. Currently, the G train could finish the 1068 kilometer Wuhan Guangzhou High-Speed Railway in 3 hours.
这是中国长距离运行的最快 EMU 列车，其最高速度可达350公里/小时。目前，G 型列车可以在3小时内跑完1068公里的武广高铁。
Today, the motives of people who move short distances are very similar to those of international migrants.
今天，短途移民的动机与国际移民非常相似。
The winds sighed around the lonely place, the mysterious voices of the night floated by out of the distances.
风在这寂寞的地方叹息，夜里神秘的声音从远处飘来。
Trains and cars initially allowed people to live at greater distances without taking longer to reach their destination.
火车和汽车最初使人们可以住在相隔较远的地方，而不需要花费更长的时间来到达目的地。
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