接下来我们可以把几个十分正当可信的数字代入德瑞克方程的最后几个因子。
We can then apply some decent and pretty reliable numbers to the final factors in Drake’s equation.
即使德瑞克方程序是真的，确实存在着数百万的文明，但要找到他们就像大海捞针。
Even if the Drake Equation is true, and there are millions of civilizations out there, finding them is like looking for a needle in a haystack.
即使德瑞克方程序是真的，确实存在着数百万的文明，但要找到他们就像大海捞针。
Even if the Drake Equation is true, and there are millions of civilizations out there, finding them is like looking for a needle in a haystack.
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