ah
int.
a cry of surprise, pity, pain, joy, dislike, etc.啊，哈
air-conditioner
n.
a device used to control temperature, humidity, cleanliness, and movement of air in conditioned space 空调机
★
air-conditioning
n.
the system that uses machines (air-conditioners) to control the temperature of the air in a room or building to keep it cool and dry 空调( 系统)
an apparatus, service, etc., which gives comfort or advantage 便利设施或用具
◇
deforest
v.
to cut down the forests砍伐（森林）
◇
dioxide
n.
二氧化物
◇
downwind
adj.
in the direction that the wind is moving顺风处
adj.
knowing, understanding, or recognizing something 有意识的，有知觉的
constant
adj.
fixed or unchanging 不变的
dam
n.
a wall or bank built across a river to keep back water, esp. to make a reservoir 水坝，堤坝
stack
n.
an orderly pile of things one above another 一摞，一叠
starve
v.
to (cause to) suffer or die from great hunger ( 使 ) 挨饿，饿死
style
n.
general manner of doing something which is typical or representative of a person or group, a time in history, etc.风格，方式
expert
n.
a person with special knowledge or training专家
◇
exploitation
n.
the act of employing to the greatest possible advantage开采
△
fossil
n.
化石
global
adj.
of or concerning the whole earth 全球的
erosion
n.
the process of eroding or being eroded 腐蚀，侵蚀
faucet
n.
a device through which the flow of water or other liquids is controlled 水龙头
forum
n.
a place where public matters may be talked over and argued about论坛，讨论会
communicative
adj.
relating to communication 通讯的；交际的
conference
n.
a formal meeting, which is held so that opinions and ideas can be exchanged 大会，会议
conscious
recycle
v.
to treat (a substance that has already been used) so that it is fit to use again 使再循环，回收利用
renewable
adj.
that can be renewed, esp. by natural processes or good management 可更新的，可再生的
sweat
n.
liquid which comes out from the body through the skin to cool it 汗，汗水
v.
to have sweat coming out through the skin 出汗
symposium
n.
a meeting between scientists or other people experienced in a particular field, in order to talk about a certain area of interest研讨会，专题讨论
isolate
v.
to separate from others 使…孤立，使…隔离
△
nurture
v.
to give care and food to养育
particula
adj.
separate and distinct from other of the same group,category or nature 特定的; 特有的
n.
the action of clearing an area of forest or trees 采伐森林
disaster
n.
sudden serious misfortune causing great suffering and damage 灾难
dispose
v.
to get rid of处理
◇
greed
n.
strong desire to obtain a lot or more than what is fair贪心，贪婪
greenhouse
n.
a glass building used for growing plants 花房，温室
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inexhaustible
adj.
which is in such large amounts that it can never be finished 取之不竭的，用不完的
influence
n.
(the power to have) an effect on someone or something without the use of direct force or command 影响
install
v.
to set (an apparatus) up, ready for use 安装
shortage
n.
a condition of having less than is needed; an amount lacking 短缺
solar
adj.
using the power of the sun's light and heat 太阳的
solve
v.
to find a solution to, an explanation of, or a way of dealing with (something) 解决，解答
liter
n.
a metric measure of liquid 公升
mount
v.
to prepare and produce (an attack)为…作准备
overflow
v.
to go beyond the limits 溢出
partner
n.
either of two people sharing the same activity or business 合伙人，伙伴
made by humans, esp. as a copy of something natural 人造的
battery
n.
an apparatus for producing electricity, consisting of a group of connected electric cells电池
garbage
n.
waste material, e.g. from a house or office, to be thrown away垃圾，废物
gas
n.
(a type of) substance like air, which is not solid or liquid and usually cannot be seen气体
harmful
adj.
causing or likely to cause harm 有害的，伤害的
hence
adv.
for this reason or from this origin; therefore 因此，从此
host
n.
a person who receives guests and provides food, drink, and amusement for them 主人，东道主
carbon
n.
碳
△
consequence
n.
result结果
consumer
n.
a person who buys and uses goods and services 消费者
convenience