新概念英语第四册 Lesson 14 The Butterfly Effect 课件

Lesson 14 The Butterfly Effect 蝴蝶效应 ① Beyond two or three days, the world's best weather forecasts are speculative, and beyond six or seven they are worthless. speculative adj. 推测的；投机的 based on guessing, not on information or facts His conlusion are purely sepculative. Many financial forecasts are highly spectulative because no one really knows what might happen tomorrow to affect the money markets. speculative investments speculate v. 猜测 We can only speculate on the reasons for his sudden resignation. speculate v. to buy goods, property, shares etc., hoping that you wil make a large profit when you sell them 投机 speculate in stocks ② The Butterfly Effect is the reason. ③For small pieces of weather -- and to a global forecaster, small can mean thunderstorms and blizzards -- any prediction deteriorates rapidly. blizzard n. 特大暴风雪 severe snowstorm deteriorate v. 变糟，恶化 worsen Alan’s health has deteriorated. America’s deteriorating economy deteriorate into .... The discussion deteriorated into a bitter quarrel. thunderstorm 雷暴 degenerate Our relationship has degenerated over the years. degenerate into Don’t allow your comments degenerate into a personal attack. get worse go from bad to worse go downhill degenrate v. 下降，退化 have/get butterfly in your stomach = be nervous ④Errors and uncertainties multiply, cascading upward through a chain of turbulent features, from dust devils and squalls up to continent-size eddies that only satellites can see. turbulent adj. 汹涌而不稳定的；动荡的 air or water moving violently and unevenly turbulent waves 湍流 the turbulemt times of the French Revolution turbulence political turbulence social turbulence turbulent waves 湍流 turb- = disturb 搅乱 turbine perturb Mother was perturbed by my illness. imperturbable perturb v. 使烦恼，使担心 imperturbable 沉着的，冷静的 Errors and uncertainties multiply, cascading upward through a chain of turbulent features, from dust devils and squalls up to continent-size eddies that only satellites can see. cascade : to oc