但是，也可能有外星生物在不断往地球发送信号的。
It is, however, also possible that someone is actively trying to send signals to the Earth.
换句话说，不管人们往地球上扔什么，地球都会以自己的节奏和方式将问题解决掉。
Whatever humans throw at it, in other words, Earth will fix things in its own time and its own way.
他们提出，在这颗行星的轨道上，它会定期地进入奥特云，扰乱那里很多彗星的轨道，并且使得其中一些彗星掉落到去往地球的方向上。
They suggest that during its orbit it would regularly enter the Oort cloud, jostling the orbits of many comets there and causing some to fall toward Earth.
宇航员表明上看起来是失重的，那是因为他们在不停地往地球方向做自由落体运动，而他们在水平方向上的运动又使他们保持着漂浮的状态。
Astronauts look weightless because they are in continuous freefall towards the Earth, staying aloft because of their horizontal motion.
今天只有大公司可以把他们的商品卖往不同的国家。明天不同规模的公司都可以通过在线服务和第三方物流公司与地球上任何一个角落进行买卖。
Today, only large companies can sell products in many countries. Tomorrow, businesses of any size can use online services and outsourced logistics to buy and sell in every corner of the globe.
天文学家越往宇宙的深处观察，他们所看到的光线到达地球所需的时间就越久。
The farther out astronomers peer into the universe, the longer it has taken the light they see to reach Earth.
牛顿观察物体往地上落，演绎出运动原则和引力原则，并将这些原则扩展到地球的运动和环绕太阳运转的行星的运动。
Newton took the principles of motion and of gravitation as deduced from observations of earthbound objects and extended them to the motions of the earth and of the planets around the sun.
从地球上看，我们将地球赤道往天际延伸之后我们称之为天体赤道，也就是现在被描述成天空四周的一个圆形区域。当地球沿着轨道绕太阳公。
A circle all around the sky. We can also imagine that while the Earth orbits around the sun, from down here on the surface.
火山灰会在地球上到处散落，从火山而来的最沉重的下风会往该方向飘达几百英里远。
Volcanic ash will fall everywhere on Earth, heaviest downwind from volcanoes for several hundred miles in that direction.
在过去的几十年中，我们的地球发生了很大变化，但是是往坏的方向。
In the past few decades, our Earth has changed a lot, but to the bad direction.
成群结队的人们不得不昼夜不停地往机器里塞入现金，以免地球停止运转？
Do teams of people have to feed in cash, day and night, lest the earth stops turning.
米莉：（5）我想知道多少人想搬往火星。（6）我认为人钔应该知道火星上的生活将不同于地球上的生活。 。
Millie:(5)I % wonder how many people would like to move to Mars. (6)I think people should know that life on Mars woulci be different from that on the Earth.
米莉：（5）我想知道多少人想搬往火星。 （6）我认为人钔应该知道火星上的生活将不同于地球上的生活。 。
Millie:(5)I E wonder how many people would like to move to Mars. (6)I think people should know that life on Mars woulci be different from that on the Earth.
将来人们可能搬往另一颗行星，因为地球上的人口正飞速增长。（因为） 飌。
People might move to another planet in the future because the population on the Earth is increasing rapidly. (because of)
奋进号航天飞机在周三晚上安全返回地球，完成了去往国际空间站的一项破纪录的16天太空飞行任务。
The space shuttle Endeavour returned safely to earth on Wednesday evening, completing a record-breaking 16-day mission to the International space Station.
奋进号航天飞机在周三晚上安全返回地球，完成了去往国际空间站的一项破纪录的16天太空飞行任务。
The space shuttle Endeavour returned safely to earth on Wednesday evening, completing a record-breaking 16-day mission to the International space Station.
应用推荐