Almost a quarter of our planet is a single mountain range and we didn't enter it until after Neil Armstrong and Buzz Aldrin went to the moon.
我们这个行星的几乎四分之一是一条单独的山脉， 然而，直到尼尔.阿姆斯特朗 和巴兹·奥尔德林登月之后，我们才进入这条山脉。