It may have been the quietest revolution in history .

这可能是历史上最安静的一次革命。

It 's the quietest story in environmentalism .

这是最和缓的环保故事。

Books are the quietest and most constant of friends ; they are the most accessible and wisest of counselors ; and the most patient of teachers .

书籍是人类最宁静最永恒的朋友，也是最易接近和最具智慧的顾问，还是最有耐心的老师。

Even in the quietest moments .

即使在最安静的时刻.

So the group looked for the quietest place on earth .

这个小组寻找着地球上最安静的地方。