In the north the ground becomes very cold as the winter snow and ice covers the ground.
在北方地面变得很冷，因为冬天的冰雪覆盖着地面。
The beans are then ground and packaged for sale as ground coffee.
咖啡豆接着被磨碎、包装，以研磨咖啡销售。
Some birds build their nests on the ground, while others bury their eggs under the ground.
有些鸟在地上筑巢，有些则把蛋埋在地下。
Another way of countering drought is to have a limited amount of mass above ground and to have extensive root networks below ground.
对付干旱的另一种方法是在地面上种植特定数量的植物，并且确保地下有广大的根系网络。
Either way, if its roots are pulled up from out of the ground as the tree topples over, then there's usually a big hole, a pit left in the ground where the roots used to be.
无论是哪种原因，如果树倒在地上时树根从地下被拔起，那么地面通常会有个大洞，在原来树根所在地留下一个坑。
Maybe the ground vibrates, or maybe the ground itself is shifting, tilting.
也许是地面震动了，或者是地面本身在移动和倾斜。
Very little light filters through the canopy of leaves and branches in a rain forest to reach ground level—or close to the ground—and at those levels the yellow-to-green wavelengths predominate.
在雨林中，很少有光透过树叶和树枝形成的树荫到达地面——或者接近地面——在这些高度上，黄色到绿色的波长占主导地位。
As she speaks, her emotional gaze shifts from the ground, to my eyes, to the moonlit sky, to the ground, and back to my eyes again.
当她说话时，她那满溢着情感的凝视的目光从地面移至我的双眼，移至月光闪耀的天空，移至地面，又回到我的双眼。
Planes must zigzag from one ground beacon to the next, and ascend and descend in steps at each stage obtaining permission from the ground.
飞机从一个地面信标到下一个信标曲折飞行，在每一阶段都要经过地面的许可才能上升和下降。
When a stream of these negatively charged electrons comes within 100 meters of the ground it is met by a stream of positively charged particles that comes up from the ground.
当这些负电荷距离地面不到100米时，会遇到一股来自地面的正电荷粒子流。
If a nonnative plant species invades an above-ground community of flora and fauna, it can alter links between the native above-ground community and the below-ground soil community.
如果一种外来植物入侵了地上的动植物群落，就会改变地上群落和地下土壤群落之间的联系。
David Haskell created artificial nests with clay eggs and placed them on the ground beside a tape recorder that played the begging calls of either tree-nesting or of ground-nesting warblers.
David Haskell 制作了一些盛有泥蛋的人造鸟巢并把它们放在地面上，旁边有一个录音机，播放着树莺或地面莺的的乞食叫声。
Place the house close to the ground because bees prefer living close to the ground.
把房子放在靠近地面的地方，因为蜜蜂喜欢住在靠近地面的地方。
According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
她的研究表明，人在跑步时，脚每次着地对地面的压力相当于自身体重的四倍，而竞走者不完全离开地面，其每步的压力只有自身体重的1.4倍。
Instead of flying straight, planes must zigzag from one ground beacon to the next, and ascend and descend in steps, at each stage obtaining permission from the ground.
客机必须曲折地从一个信号站飞到下一个，而不是直线飞行；每一步上升或下降都需要得到地面的许可。
Jake: Sometimes they find things on the ground. Sometimes they find things under the ground or under rocks.
杰克：有时他们在地面上找到东西，有时他们在地下或在石头下找到东西。
Everybody gets what a train is, whether it's above ground or below ground.
每个人都知道列车是什么，无论它运行在地面或地下。
But if that ground is, indeed, sloping, it means that the wind (which tends to follow the ground when it is close to the surface) hits the blades of the turbines at an Angle instead of face on.
但是，如果此处地面确实是倾斜的，这则意味着风(贴近地面吹向叶面)从一种角度吹向发电机叶片，而非正面对吹。
To meet this new challenge, many Western nations, particularly the United States, are improving their fleet's ground support role with improved sensors and precision ground attack capability.
为了满足这种新的挑战，许多西方国家，尤其是美国，通过改善传感器和精确地面打击能力来改善其机群的地面支持作用。
The launching ground is ready to accept another rocket. The ground is never destructed by the vehicles and doesn't need any reconstruction.
发射地面已准备就绪接受发射另一枚火箭。该地面从未被任何交通工具损毁，也不需要任何重修。
An arch in the foot would provide leverage to push off the ground at the start of a stride and then help absorb shock when the foot meets ground again, suggesting Lucy's feet were much like ours.
足部的拱形类似杠杆的作用，在迈步时起到蹬地作用，并且在脚着地时起到吸收冲击力的作用，这暗示露西的脚与我们现代人的很相似。
There were plenty of rocks that were probably made when lava bubbling from under the ground mixed with water percolating through the ground.
那里有大量的岩石有可能是由从地下冒出的混合着渗透水的岩浆泡形成的。
As these crystals flutter to the ground, much time is spent with their faces flat, parallel to the ground.
这些冰晶缓缓地飘向地面，大多数时候是面向地面并与地面平行的。
Raytheon's MAINGATE solution is the backbone of the network, which will link together unattended ground sensors, unmanned ground vehicles and unmanned aircraft systems.
雷神公司MAINGATE解决方案是网络的主干，将与无人值守地面传感器、无人地面车辆和无人驾驶飞机系统保持联系。
Aim the photoresistors on the ground and you have instant obstacle avoidance - your robot will avoid the shadows cast on the ground by objects in the way.
把光敏电阻传感器对准地面，扫清地面上的障碍——你的机器人会避开在行进路线上的物体投影。
Now lower back down slowly and controlled while inhaling through your nose, just until your shoulder blades touch the ground. Do not let your head touch the ground and repeat.
现在用鼻子吸气，慢慢躺下，但不要让头部接触地面。
Storms producing cloud to ground lightning (lightning that strikes the ground) in isolated thunderstorms or super cells (which can be very dangerous) produce some dramatic pictures.
风暴产生的云团和雷电交加的暴风雨会产生地面闪电(击向地面的闪电)，或者超级闪电(可能非常危险)会拍出极具效果的照片。
Storms producing cloud to ground lightning (lightning that strikes the ground) in isolated thunderstorms or super cells (which can be very dangerous) produce some dramatic pictures.
风暴产生的云团和雷电交加的暴风雨会产生地面闪电(击向地面的闪电)，或者超级闪电(可能非常危险)会拍出极具效果的照片。
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