If we could power such an elevator with solar energy, we could simply rise up into space for a fraction of the cost of a trip by rocket or shuttle.(如果我们能利用太阳能为这样的电梯提供动力,我们只需花费乘坐火箭或航天飞机旅行费用的一小部分就能进入太空。)
The tiny rocket is attached to the spacecraft and is designed to propel it toward Mars.(微型火箭附在宇宙飞船上,用来推进飞船飞向火星。)
Then he slowed down and began making a rocket.(然后他放慢了速度,开始制造火箭。)
The rocket was launched in March 1980.(这枚火箭发射于1980年3月。)
It is to get the rocket going fast enough to escape Earth's gravity.(是为了让火箭的速度足够快,足以逃离地球的引力。)
For me, fame is like rocket fuel.(对我来说,名声就像火箭燃料。)
Oxygen could be used to breathe, and hydrogen could be turned into fuel, rocket fuel.(氧气可以用来呼吸,氢气可以变成燃料,火箭燃料。)
The rocket crashed a few seconds after it left the ground.(火箭离开地面几秒钟便坠毁了。)
The rocket site is providing precise measurements of lightning voltages and allowing engineers to check how electrical equipment bears up.(这个火箭发射场现在能对闪电电压进行精确测量,并可以让工程师们检测电气设备的负载。)