1. Because the dust becomes thinner the further we travel towards the outer edges of our own solar system.
    因为我们越是接近太阳系的边缘，尘埃就越稀薄。

2. Of all the planets in our own solar system, we are now pretty certain the Earth is the only one on which life can survive.
    我们目前可以肯定的是，在我们太阳系的所有行星中，地球是生命能存在的唯一行星。

3. Once on the edge of the educational system, such schools, or jukus, are now so common in Japan that, especially for those people at the top level of society, they have begun to function as a kind of shadow educational system, replacing regular school
    这些专门对付考试的课外学校（日语中称为juku），曾是教育体制的次要成分，如今却在日本非常普及，尤其对上层社会的人群而言，它们已经开始成了一种影子教育体制，在家长和学生、乃至两三岁的孩童心目中，它们的重要性已经取代了正规学校。

4. One organization has held dozens of workshops in rural Kenya to help women understand the nation's constitution and the procedures and theory behind a democratic political system.
    有个机构已经在肯尼亚农村举办了十几个专题讨论会，目的是帮助妇女理解国家宪法以及民主政治制度所体现的程序及理论。

5. One person likes quiet, while the other person spends two hours a day practicing the trumpet, or turns up his sound system to the point where the whole room vibrates.
    一个人喜欢安静，而另一个却每天练习两个小时的小号，或将音响开得很大，声音响得连整个房间都振动了。

6. The worldwide system that enables us to communicate instantly with anyone in any part of the world by using computers linked to telephone networks.
    以便和世界上任何一个地方的人立即进行联系的一个世界范围的通讯系统--的发展。

7. I can send him a note via the internal mail system.
    我可以通过内部通讯系统给他发个通知.

8. In a democratic system it is the people that wield the power.
    在民主体制中，人民掌握权力。

9. If our educational system were fashioned after its bookless past we would have the most democratic form of ´college´ imaginable.
    如果我们的教育制度仿效没有书籍的古代教育，我们的学院将具有可以想象得出的最民主的形式了。

10. It is the one world in the Solar System that is most like the Earth.
    火星是太阳系里与地球最接近的一颗行星。