值得庆幸的是，如果半人马座阿尔法星系存在生命，它们遭受此厄运的可能性微乎其微。
Fortunately, if life has taken root in the Alpha Centauri system, it is not likely to suffer this fate.
但这并不代表半人马座阿尔法星不具有某种适宜居住的环境——它最好是类似于我们地球的行星，而不是卫星。
That's not to say that Alpha Centauri doesn't have a habitable world of some kind—it would just have to be a planet like our own, rather than a moon.
电影中：为了踏上通往半人马座阿尔法星的星际之旅，人类打造了近1英里长的太空飞船，此飞船使用了混合反物质聚合发动机。
In Avatar: For the interstellar journey to Alpha Centauri, humans have constructed spaceships nearly a mile long outfitted with hybrid antimatter fusion engines.
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