Yes, last night, in a matter of minutes, we cleared that insuperable isthmus.

对，就是昨夜，几分钟内，我们便走过了这不能走过的地峡。

And on the American side, Reagan's fixation on the Strategic Defence Initiative, or Star Wars-space-based missile-busting lasers-proved an insuperable obstacle.

美国方面，里根对战略御计划(“星球大战”)的——以太空为基础的导弹摧毁激光——被证明是一个无法逾越的障碍。

But not, I think, an insuperable one.

但我认为这并不是无法克服的困难。

That itself might not have been an insuperable problem.

这本身也许还算不上一个不可克服的问题。