Go to the moon and back is not as challenging as it returns to the earth and have to deal with humanity.

Go to the moon and back is not as challenging as it returns to the earth and have to deal with humanity.

登上月球并返回地球并不像返回地球并与人类打交道那么具有挑战性。

-- Buzz Aldrin 巴兹·奥尔德林