translation.en: There are more stages involved here than I've got time to tell you about, but basically we drive through the space, we populate it with environmental variables -- sulphide, halide, things like that.
translation.zh: 这个有更多的步骤 可惜我没有足够的时间细述，但是基本上我们操纵机器人 穿过这个空间，我们让它探测环境变量-- 硫化物，卤化物，这样的东西。