translation.en: I would like to talk today about what I think is one of the greatest adventures human beings have embarked upon, which is the quest to understand the universe and our place in it.
translation.zh: 今天我要讲的是 我认为的最伟大的一项冒险 是人类有史以来 为了探求宇宙 以及我们在宇宙中的位置的探索。