Scientists tell us that the world of nature is so small and interdependent that a butterfly flapping its wings in the Amazon rainforest can generate a violent storm on the other side of the Earth.

• 科学家告诉我们，自然界是如此之小，并且相互依存，亚马孙雨林里一直蝴蝶扇动它的翅膀，就能在地球的另一面引起一场猛烈的风暴。