Two rockets homed in on it from behind without a sound.
两枚火箭无声地从后面向目标射去。
An officer and another sailor on it saw the rockets.
上面的一名军官和另一名水手看到了火箭。
Unfortunately, we do not know how to build rockets that fast!
遗憾的是我们不知道怎样制造这么快的火箭！
Anyway, who would want to fire streams of rockets in a populated area?
不管怎样，谁会想在人口稠密的地区发射火箭呢？
At Space Camp, trainees can earn their Space Exploration badge as they build and fire model rockets.
在太空营，学员可以制作和发射火箭模型，以此获得太空探索徽章。
Cyrano was dead and buried for a good three centuries before the first manned rockets started to fly.
在第一批载人火箭开始飞行之前，西拉诺已经死了，且已被掩埋了整整三个世纪。
But while rockets are fine for research, they cannot provide the protection from lightning strikes that everyone is looking for.
"然而，火箭虽然用来做研究是很好的，但却无法提供人们想要的免受雷击的保护。
"We can cause the lightning to strike where we want it to using rockets," says Ralph Bernstein, manager of lightning projects at EPRI.
美国电力研究协会（EPRI）负责闪电项目的经理拉尔夫·伯恩斯坦说：“我们可以用火箭让闪电打到我们想要的地方。”
Pyramids, cathedrals, and rockets exist not because of geometry or thermodynamics, but because they were first a picture in the minds of those who built them.
金字塔、大教堂和火箭的存在并不是因为几何形状或热力学，而是因为它们首先是建造它们的人的脑海中的图画。
In the early 1960s, researchers tried firing rockets trailing wires into thunderclouds to set up an easy discharge path for the huge electric charges that these clouds generate.
在20世纪60年代早期，研究人员试图将火箭尾部的电线发射到雷云中，以便于为这些雷云产生的巨大电荷建立一个简单的放电路径。
Some futurists envision nanotechnology also being used to explore the deep sea in small submarine, or even to launch finger-sized rockets packed with micro miniature instruments.
一些未来学家设想纳米技术也可以用于在小型潜水艇里探索深海，甚至可以用来发射装有微型仪器的手指大小的火箭。
People can only fly rockets into space right now.
现在人们只能把火箭送入太空。
The rockets take astronauts and man-made satellites into space.
火箭把宇航员和人造卫星送入太空。
In 1956, he set up the first research institute of rockets and missiles.
1956年，他建立了第一个火箭和导弹研究所。
Li Zixuan says that when he was a child, he heard about rockets and spaceships.
李子轩说，他小时候就听说过火箭和宇宙飞船。
After he graduated, he became a teacher as well as a researcher who studied rockets and missile theories.
毕业后，他成为了一名教师以及研究火箭和导弹理论的研究员。
From his father, he knew that scientists make rockets to carry things into space, and spaceships are used to carry people through space.
从他父亲那里，他得知科学家们制造火箭来把东西送入太空，而宇宙飞船是用来载人穿行太空的。
Objects, like bits of old space rockets or satellites, move around the planet at very high speeds, so fast that even a very small piece can break important satellites or become dangerous to astronauts.
一些物体，比如一些旧的太空火箭或卫星碎片，在地球上以非常高的速度运动，速度如此之快，以至于一个非常小的碎片都能破坏重要的卫星或对宇航员造成危险。
Air-launched rockets have a long history.
空基发射的火箭已经有很长的历史了。
Some rockets carry more than one satellite.
某些火箭能装载一枚以上的卫星。
Unfortunately we do not know how to build rockets that fast!
遗憾的是我们不知道怎样制造这么快的火箭。
The new rockets could take astronauts to some thrilling places.
新型火箭可以搭载宇航员到达某些令人兴奋的地方。
Listing 7 shows a (contrived) application to assemble toy rockets.
清单7显示了一个装配玩具火箭的应用程序(人为设计)。
To explore the moon’s surface, rockets were launched again and again.
为了探测月球表面，人们一次又一次地发射火箭。
To explore the moon's surface, rockets were launched again and again.
为了探测月球表面，人们一次又一次地发射火箭。
Together on the right, are Mercury-Redstone and Mercury-Atlas rockets.
右边两个是水星-红石号和水星-阿特拉斯号。
I have completely forgotten how it feels like when the rockets lose a game!
我已经完全忘记了，当火箭队输掉一场比赛，那是什么样的感觉了。
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