1. Education of African women has become a top priority for political activists.
    非洲妇女的教育已经成为政治活动家们着重优先考虑的问题。

2. Bamboo is this kind of grass. It grows up straight and thin, with branches at the top.
    竹子就是这种草. 它长得又直又细, 顶端长着枝权.

3. But suppose the earth could be covered with sensors spaced one foot apart, rising at one-foot intervals all the way to the top of the atmosphere.
    假设地球上可以布满传感器，每个相隔1英尺，并按1英尺的间隔从地面一直排列到大气层的顶端。

4. Byrd at once ordered his men to throw out two heavy food sacks.
    伯德马上命令他的助手们把两个沉重的食物袋扔掉，

5. Bits of broken glass, lengths of string, a key to a door long since decayed away, a rusty knife-blade, old shoes saved for a road that never was and never will be, a nail bent under the weight of things too heavy for any nail, a dried flower or two s
    碎玻璃块；小线头儿；一扇早已朽败的门上的钥匙；一把锈蚀的刀；一双为某条从来没有、将来也不会有的路而准备的旧鞋；一颗弯折的钉，它所承受过的重量足以弄折任何钉子；一两支干花，仍散发出几许花香。

6. For it is then almost ready to undertake heavy work and can begin to earn its keep straight away.
    这个年龄的象差不多已能干重活，可以很快挣回饲养它的开支。

7. For heavy rain would not only wash away the soil but would cause serious floods as well.
    因为大雨不仅会冲走土壤，而且还会引起严重的水灾。

8. When you have reached the top, you can see for miles about you.
    当你上到顶端后，你可以望到周围数英里之外的景物。

9. While not exactly a top selling book, The History and Geography of Human Genes is a remarkable collection of more than 50 years of research in population genetics.
    尽管不完全是畅销书，《人类基因的发展与地理分布》是一本汇集了50多年来人种遗传学方面的研究成果的好书。

10. The boat capsized in heavy seas.
    船在大海中倾覆了.