Even if the DrakeEquation 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。
2
His quirky study USES a famous maths formula called the DrakeEquation, which was first used to estimate the existence of extra-terrestrial life.
这一公式最初被用于估算外星生命存在的几率。
3
L the DrakeEquation was proposed by astronomer Frank Drake to work out how mane civilizations there could be in our galaxy - and the figure is millions!