With the 'big bang' upgrade approach, I would not be able to rehearse or test the upgrade process and there was potential to be caught out by unknown issues.
按照这种“大爆炸式”的升级方法，我无法预演或测试升级过程，有可能遇到未知的问题。
2
The postulate they had planned to test was that the first stars to form after the Big Bang would have left some signs of themselves in the form of radio waves.