这幅来自NASA火星轨道观察器的图像显示了位于火星南方高地巨大的Hellas撞击盆地北侧地表上的一个大撞击坑。
This observation from NASA's Mars Reconnaissance Orbiter shows the floor of a large impact crater in the southern highlands, north of the giant Hellas impact basin.
科学家将白垩纪末期的大灭绝与地球上的陨石撞击联系起来。
Scientists have linked the mass extinction at the end of the Cretaceous with a meteorite impact on Earth.
这次撞击释放了大量的能量，挖出了一个大约有月球上的第谷陨石坑两倍大的陨石坑。
This impact released an enormous amount of energy, excavating a crater about twice as large as the lunar crater Tycho.
现在正在寻找那种如果撞击地球，他们的体积大到足够引起严重毁灭的太空岩石。
The search is now on for space-rocks large enough to cause serious devastation if they hit Earth.
一块非常大的石头撞击了地球。
虽然天体撞击的毁灭性不容置疑，但是没有证据表明彗星导致了地球物种周期性的大灭绝。
While there’s little doubt about the destructive power of cosmic impacts, there is no evidence that comets have periodically caused mass extinctions on our planet.
星系的撞击将会使它们合成一个大的椭圆型星系吗？
Will the result of these galactic collisions be one big elliptical galaxy?
众所周知，6千5百万年前一颗小行星的撞击导致了恐龙的灭绝，然而一颗大彗星的撞击可能是同样致命的。
An asteroid impact is famously responsible for the extinction of the dinosaurs 65 million years ago, but large comet impacts may be equally deadly.
这40亿年前发生在月球南极的小行星撞击抛出了一大片碎渣——就像一只狗疯狂地在沙地里刨洞一般。
The impact of an asteroid at the moon's South Pole 4 billion years ago threw out a colossal surge of debris - like a dog furiously digging a hole in the sand.
他知道只有一种东西能用这么大的力量撞击他。
托尔伯特说，就在数周前一辆水泥运输车还曾撞击过高速路的中路，撞坏了一大部分路。
A few weeks earlier, Talbot said, a concrete hauler had hit the freeway median, taking out a big chunk of it.
我看见了一只有毛的大蜘蛛，它不能生存下来因为它的头被撞击了。
I also encountered a very large furry spider, which didn't survive it's head being bashed.
在接下来的1.35亿年里，这些大蜥蜴开始统治地球，直到一个小行星撞击在尤卡坦半岛。
For the next 135 million years, the great lizards ruled Earth. Then an asteroid struck the Yucatan Peninsula.
一个足够大的天体只要它平均每100万年撞击地球两次就足以摧毁一大部分地球上的人口。
An object big enough to kill off a substantial portion of the earth's population only hits earth about twice every million years.
据认为，那次古老冲撞的碎片在六千五百万年前曾经撞击地球，引发了消灭恐龙的大灭绝。
One fragment of that ancient smash is thought to have struck Earth 65 million years ago, triggering a mass extinction that wiped out the dinosaurs.
我们的恒星被一个超乎寻常大的掠日彗星撞击了，相机在有影响的7个小时前拍下了这一切。
Our star was hit by an unusually large sungrazer caught on camera careering towards it seven hours before impact.
更糟糕的是：落差大，很容易达到最高速度- - -您的速度越快，双脚撞击地面越厉害，肌肉承受的冲击越大。
To make matters worse: it's easy to hit top speed on a steep descent-and the faster you move, the harder each foot strikes the ground, and the more pounding the muscles endure.
大狐狸，你知道这样一个简单的动作却多强烈的撞击了我，就像我从不曾了解如此简单的行为能有这样大的力量一样？
Fox do you know how strongly this simple gesture strikes me as before I never knew it could be so?
微流星体及空间碎片的高速撞击威胁着长寿命、大尺寸航天器的安全运行，导致其严重的损伤和灾难性的失效。
High velocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation, that can in turn lead to significant damage and catastrophic failure.
微流星体及空间碎片的超高速撞击威胁着长寿命、大尺寸航天器的安全运行，导致其严重的损伤和灾难性的失效。
Hypervelocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation that can in turn lead to significant damage and catastrophic failure.
如果我们拥有过多的草坪腐殖质层(枯草层)，(击球后在草坪上呈现的)一个大塞子状痕迹显示出球的能量在撞击后被吸收，因此掩盖了高尔夫球手的击球质量。
If we have excessive thatch, a large plug mark will indicate the balls energy was absorbed on impact, thereby disguising the quality of ball strike from the golfer.
又一记撞击声，门上多了一个大突起。
There was another loud crash and another big dent popped out in the door.
本文报道了五种规格充满水的圆柱壳经受大质量低速度轴向撞击作用时屈曲过程的实验结果。
Experimental results for the buckling process of cylindrical shells fully filled with water under axial impact are reported.
当大规模的流星淋浴威胁着地球上的生物大灭绝级别的事件，是世界上最伟大的头脑想出一个危险的计划，将采取关闭星球的轴线，以避免撞击。
When a shower of massive meteors threatens an extinction level event on Earth, the world's greatest minds devise a dangerous plan that will take the planet off its axis in order to avoid the impact.
采用高速大质量块撞击火炮身管是一种技术可行的火炮射击模拟试验方法。
Driving a huge mass with a high speed to impact the tube of gun weapon is a feasible technology used to simulate the firing process.
具有淀积温度低，没有高能离子撞击损伤，淀积面积大，操作简单，微机程序控制，节约能源等优点。
The utility model has the advantages of low deposition temperature, no high-energy ion impact damage, large deposition area, simple operation, microcomputer programmed control, energy saving, etc.
大银24的AC在一环境与可能准确撞击的很少动物一起内极其高。
The Large Silver's ac of 24 was extremely high in an environment with few creatures that could hit accurately.
针对动能杆式弹大倾角斜撞击靶板产生的靶后破片，建立了其初始破片云数学描述模型，并在此基础上对斜撞击靶后破片特征分布进行了建模。
For the description of the debris behind oblique single plate target perforated by kinetic projectile, an initial armor debris cloud model has been proposed.
科学家们在星期四说，一大块新发现的太空岩石有1/75的几率将在1月30日撞击火星。
A newly discovered hunk of space rock has a 1 in 75 chance of slamming into the Red Planet on Jan. 30, scientists said Thursday.
科学家们在星期四说，一大块新发现的太空岩石有1/75的几率将在1月30日撞击火星。
A newly discovered hunk of space rock has a 1 in 75 chance of slamming into the Red Planet on Jan. 30, scientists said Thursday.
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