translation.en: And then Drake's Equation, which is looking at the probability of life arising on planets, how long it might last, how many planets are out there, stuff like that.
translation.zh: 然后是德瑞克方程式，大家知道， 它关注的是行星上可能产生生命的概率，可以维持的时间，以及可能有多少行星， 诸如此类