Dear Ouyang Guang，

　　There are many people who have a commitment⑥ like yours⑦， but they do not believe they have the power to do⑧ anything to improve our environment. That is not true. Together, individuals can make a difference⑨. We do not have toput up with⑩pollution⑪.

　　Thegrowth⑫ of the greenhouse gas, carbon dioxide in the air actually comes as a result of many things we do every day. Here are a few suggestions on how to reduce it. They should get you started with your project⑬. ⑥commitment/kə'mItmənt/n.承诺；交托

　　⑦who引导定语从句修饰people。

　　⑧have the power to do 有能力做

　　⑨make a difference 有影响

　　⑩put up with 忍受；容忍

　　⑪pollution/pə'luːʃn/n.污染；弄脏

　　⑫growth/ɡrəʊθ/n.增长；生长

　　⑬get you started with your project是"get＋宾语＋过去分词"结构。 　　

　　亲爱的欧阳光：,有许多人承担你这样的义务，但他们不相信自己有能力做些事情来改善环境。那是不正确的。众人拾柴火焰高。我们不必去忍受污染。,空气中的温室气体二氧化碳的增长的确是来自我们许多的日常活动。这儿有几条关于减少空气中二氧化碳含量的建议。这些建议应当能够促进你的研究。

　　1 We use a lot of energy in our houses. It is OK to leave⑭ anelectrical⑮ appliance⑯ onso long asyou are using it⑰ - if not, turn it off! Do not be casual⑱ about this. So if you are not using the lights, the TV, the computer, and so on⑲， turn them off. If you are cold, put on more clothes instead of turning up the heat.

　　2 Motor⑳ vehicles use a lot of energy - so walk or ride a bike if you can.

　　3 Recycle cans\s\up1(21(21)， bottles, plastic bags and newspapers if circumstances\s\up1(22(22) allow you to\s\up1(23(23). It takes a lot of energy to make things from new materials, so, if you can, buy things made from recycled materials\s\up1(24(24). ⑭leave ... on 让......开着

⑮electrical/I'lektrIkl/adj.电的；与电有关的

⑯appliance/ə'plaIəns/n.用具；工具；器具

⑰so long as(＝as long as)"只要"，引导条件状语从句。

⑱casual/'kæʒjʊəl/adj.随便的；漫不经心的；偶然的

⑲and so on 等等　

⑳motor/'məʊtə/n.发动机

\s\up1(21(21)can/kæn/n.容器；罐头

\s\up1(22(22)circumstance/'sɜːkəmstəns/n.环境；情况

\s\up1(23(23)to后省略了recycle them，此处动词不定式符号to不可省略。

\s\up1(24(24)过去分词短语作后置定语，修饰things。

　　 1.在室内我们使用大量的能源。只要你在使用电器设备，你可以让它开着--如果不用，就把它关掉！不要对此疏忽大意。因此，你如果不用电灯、电视、电脑等，就把它们关掉