How do satellites stay up without falling down?
卫星是如何不坠落的呢？
Others dream of using them as the basis of a novel communication system that would allow messages to be transmitted to the other side of the world without wires, cables or satellites.
另外一些科学家则梦想使用中微子作为一种新形通信系统的基础，使邮件可以传递到世界另一端，无需使用电线、电缆或卫星。
This ensures that programs used on the satellites and in the ground station computers execute required missions without errors that commonly occur when incompatible technologies are combined.
这确保了用于卫星和地面站计算机中的程序执行要求的任务而不会产生错误，这些错误通常产生于不兼容的技术被共同使用的时候。
That is quite enough trash, without needlessly creating vastly more of the stuff by smashing up satellites.
这些垃圾已经足够多了。而破坏卫星又产生了更大量地完全没有必要产生的垃圾。
That is quite enough trash, without needlessly creating vastly more of the stuff by smashing up satellites.
这些垃圾已经足够多了。而破坏卫星又产生了更大量地完全没有必要产生的垃圾。
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