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Reading II Supplementary --3-- sour----n.The sensation of sour taste, one of the four primary tastes.酸的味觉，四种基本味觉之一adj. Having a taste characteristic of that produced by acids; sharp, tart, or tangy.

酸味的；味道强烈的，酸的或者味道浓烈的

Bad-tempered and morose; peevish:脾气坏的及孤僻的；易怒的：

a sour temper.坏脾气

ozone----[‘euzeun]n. Fresh, pure air.新鲜的空气, [化]臭氧

ozone layer臭氧层(距地球表面20-40英里, 为同温层的外缘) deplete [di’plit]---- vt To decrease the fullness of; use up or empty out.消灭，用光, 降低充满度Deplete, Drain意指通过逐渐消耗而减少，暗示（drain更强调）危害性

Exhaust强调减少到不再有用的地步

Impoverish指资源和性质严重减少到最基本的程度

Enervate指活力或力量上的变弱或损伤

Exploit---- vt [iks’plCit] To employ to the greatest possible advantage 充分利用exploit one's talents充分发挥某人的才能

entitle----To give a name or title to.给…题名或命名

framework----A fundamental structure, as for a written work or a system of ideas. 结构agenda----A list or program of things to be done or considered 议事日程

acknowledge---- v.tr. To admit the existence, reality, or truth of 承认某物的存在、现实或真相context-----The part of a text or statement that surrounds a particular word or passage and determines its meaning. 上下文

-----The circumstances in which an event occurs; a setting 背景

vow---- vt To declare or assert宣称或断言：

Well, I vow it is as fine a boy as ever was seen!

“好吧，我断定他是我见过的一个最好的孩子!”

obligation----A social, legal, or moral requirement that compels one to follow 义务

enact-----To make into law 制订成法律：

Congress enacted a tax reform bill. 国会使税收改革提案成为法律----- To act (something) out, as on a stage扮演（某物）

I enacted the part of the parent. 扮演家长的角色

Strategy----A plan of action intended to accomplish a specific goal.计划

Capacity---- Ability to perform or produce; capability 能力

Settlement----- Establishment, as of a person in a business or of people in a new region定居点

A small community.小社区

Disaster-----An occurrence causing widespread destruction and distress; a catastrophe. 灾难Relief----Public assistance. 救济Aid in time of danger, especially rescue from siege围困救难Rational----Consistent with or based on reason; logical合理的rational behavior.理智的行为Diversity----Variety 变化多样性

Desertification----The transformation of arable or habitable land to desert 沙漠化

Sound----Free from defect, decay, or damage; in good condition.完好的

Having a firm basis; unshakable牢固的Based on valid reasoning 合理的