下面的文字说明了嫦娥一号卫星的奔月过程，请概括这个过程的三个阶段。
“嫦娥一号”卫星由长三甲运载火箭送入绕地轨道，然后要在这三条大椭圆轨道上运行共约7天，做三次大的轨道运动，在获得足够的速度后，卫星进入地月转移轨道。随后卫星将沿着这条轨道飞向月球，飞行114小时后到达近月点。此时，卫星要进行减速制动，以让月球捕获探测器。随后要进行三次近月制动，让“嫦娥一号”最终变为环月飞行的圆轨道卫星。
（1）第一阶段：（不超过15个字）
（2）第二阶段：（不超过15个字）
（3）第三阶段：（不超过15个字）
（1）在绕地轨道不断加速
（2）沿奔月轨道飞向月球
（3）制动减速后入轨绕月
Whenever we meet with difficulty or failure, teachers, parents or others often say to us or perhaps we say to ourselves, “Never give up.” These can be encouraging words and words of determination(决心). A person who believes in himself will keep trying to reach his goal no matter how many times he fails. In my opinion, the quality of determination to succeed is an important one to have. Therefore, I believe that we should never give up. One reason is that if we give up too easily, we will rarely achieve anything. It is not unusual for us to fail in our first attempt（尝试） at something new, so we should not feel disappointed （失望）and should try again. Besides(此外，而且), if we always give up when we fail, we will not be able to develop new skills and grow. Another reason we should never give up is that we can learn from our mistakes so that we can not make the same ones. If we do not try again, the lesson （教训）that we learned is wasted. Finally, we should never give up because as we work to reach our goals, we develop confidence, and this confidence can help us improve our lives. If we never challenge （挑战）ourselves, we will begin to doubt our abilities. In short, it is important that we do not give up when working for our goals. Whether we succeed in the end or not, we will learn something, and what we learn will help us to become better and more confident. Further more, if we give up, we have no chance of achieving our goals any more , but if we keep making great efforts, there is always a chance that we will succeed in the future. Topic: Never Give Up
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