VOA慢速英语:“蝴蝶效应”和连锁反应

flutter – v. to flap the wings rapidly butterflies fluttering among the flowers : to move with quick wavering or flapping motions a sail fluttering in the wind : to vibrate in irregular spasms his heart fluttered : to move about or behave in an agitated aimless manner She nervously fluttered around the office.

philosophical – adj. of or relating to the study of basic ideas about knowledge, right and wrong, reasoning, and the value of thing

ripple – n. the ruffling of the surface of water : a small wave a usually slight noticeable effect or reaction