1. It is quite unnerving not to be able to see or to establish contact with the other person, even though we have learnt to have conversations with people we cannot see, as on the telephone.
不能和其他人建立联系或者不能看见其他人是相当让人紧张的，即使我们曾学习过和我们无法看见的人进行对话，就像是打电话。
2. Actually we know of no type of astronomical body in which the conditions can be favorable to life except planets like our own revolving round a sun.
实际上我门都知道在这样的情况下没有那种天体能孕育出生命除非像我们这样围绕着太阳转动的行星
