红松鼠生活在高高的树上，而灰松鼠则大部分时间生活在地面上。
Red squirrels live high up in trees, while grey squirrels spend more of their time on the ground.
白腹树袋熊，作为一种已知的生物，是一种生活在森林里的有袋类动物，大部分时间生活在地面上，它的颜色非常鲜艳。
The Dingiso, as the creature is also known, is a forest-dwelling marsupial with bold coloration that spends most of its time on the ground.
根据电脑的模拟，长足跟通过延长短跑选手足部与地面接触的时间同样可以使得选手们获得更快的速度。
According to the computer simulation, having long toes also makes sprinters speedier, by extending the time that a runner's foot makes contact with the ground.
为确保地面上人的安全，最好的方法是以一个强大的推进器燃烧来使宇宙飞船脱轨，在正确的时间使其慢下来。
To keep people on the ground safe, it's best to deorbit a spacecraft with a strong burn of propellant, to slow it down at the right time.
刚开始地上的尘土，石子儿，凸出地面的树根都会弄痛她的脊背，但时间一长她就习惯了。
The dirt and pebbles and outstretched roots of trees hurt her back at first, but she became used to it over time.
地面观测点，特定时间内空气和火山灰范围的卫星图片可以用来建立一系列更好跟踪火山灰的模型。
Observations from ground, air and satellite of the ash's extent at specific times might be used to create a series of model runs that would track it better.
按照爱因斯坦理论，相对于地面上的时钟，飞机上的时钟会因为80个小时的运动而减少时间。
According to Einstein's theory, the clock on the plane would be expected to have lost time, due to being in motion over 80 hours compared to the clock on the ground.
地面的接收器将利用卫星上的时间信号准确地计算出它们的方位。
Receivers on the ground will use time signals from the satellites to precisely calculate their 14 location.
相反，他们从类人猿(apes)进化而来，起先他们在树上度过大部分时间，后来直立着下到了地面。
Instead they evolved from other apes who spent most of their time in trees and descended to the ground upright.
首颗MUOS卫星及其相关的地面系统的在轨移交时间是2010年。
The first MUOS satellite along with the associated ground system are scheduled for on-orbit hand-over to the Navy in 2010.
地面上处于本影位置的观测者可以看到月球将太阳整个覆盖住，时间长达几分钟，其时只有太阳微弱的上层大气或称为日冕依然处于可见状态。
On the ground, viewers in the full shadow's path-aka the path of totality-see the moon cover the sun's disk for several minutes. Only the sun's faint upper atmosphere, or corona, remains visible.
地面交通费每天不超过一百美元，而且出行时间必须在下午八点以后。
Ground transportation is limited to $100 a day, and only after 8 p.m.
最为戏剧性的变化发生在2005年9月。数以百计的深部裂缝在几周的时间之内出现部分地面几乎一夜之间抬升了8米。
The most dramatic event came in September 2005, when hundreds of deep crevices appeared within a few weeks, and parts of the ground shifted eight metres, almost overnight.
上面的方法本质上是一种间歇训练，其最快和最慢的跑都要在田径场或者一块平整的地面上进行，而跨步跑没有这么多要求，你几乎可以任何时候任何地方进行，它只占用你训练最后的几分钟时间。
You can do them almost anytime, anywhere. They take only a few minutes at the end of a workout.
尽管阿迪一生中大部分时间也许是在树上渡过的，但当她下到森林地面上时，她的骨盆是适合直立行走的。
Though Ardi would have spent much of her time in the trees, her pelvis was adapted to walking upright when she came down to the forest floor.
但是由于新的挖掘与地面几乎零距离，因此如果有的话，应该会发现最接近时间点的物种损失要比世界上其他地方多。
But since the new digs were so close to ground zero, the immediate species loss ought to be have been - if anything - greater there than anywhere else in the world.
也许这就是为什么我们已经从树干爬下到地面上这么长时间了，还是会对树木产生敬畏之情。
Perhaps that is why long after we have climbed down their trunks we still gaze at trees in awe.
通信时间差是这次训练的一部分，也是小行星上实际展开任务时宇航员和地面控制人员共同面临的问题。
A communications time lag, which simulates what astronauts and ground controllers would experience during an actual mission at an asteroid, is part of the exercise.
不过，有一段时间，莫斯科市周围的土地起到了自然空调的作用，通过从地面蒸发湿气保持空气凉爽。
However, for a while the land around the city acted as a natural air conditioner, keeping the air cool through evaporation of moisture from the ground.
而当它们飞舞着接近地面的时候，因为空气阻力的原因，它们会在空中水平漂浮很长时间。
Air resistance then causes these crystals to lie nearly flat much of the time as they flutter to the ground.
他拒绝为撤军设定一个时间表。他说，撤军数量将取决于伊拉克的地面局势，但伊拉克的地面局势是无法提前作出估计的。
He has refused to agree to a timetable for withdrawals, saying reductions in troop levels will be determined by conditions on the ground in Iraq that are impossible to predict in advance.
地面上还有熊的爪印，像餐盘那样大，也许有一天时间了。
And there were bear prints too, perhaps a day old, big as dinner plates.
当时的恐怖过去很长时间之后，幸存者要完全相信地面是牢固的还需要时间。
Long after their immediate terrors have passed, it takes survivors time to trust, fully, in the solidity of the ground.
地面剧烈摇晃的时间，比我以前经历的任何一次地震都要长。
The fierce rolling of the earth lasted longer than I had ever experienced.
我花了一个下午的时间在地面上安装了一个又大又重的地面固定装置，用一条非常长、非常重的摩托车链条把它们锁在一起。
I spent a recent afternoon installing a hefty ground anchor, to which my bikes are now attached with a very long, alarmingly heavy, motorbike chain.
我花了一个下午的时间在地面上安装了一个又大又重的地面固定装置，用一条非常长、非常重的摩托车链条把它们锁在一起。
I spent a recent afternoon installing a hefty ground anchor, to which my bikes are now attached with a very long, alarmingly heavy, motorbike chain.
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