1. Earth looks like a big blue marble (玻璃球); from high above the Earth and from the moon, the planet gleams and shines.
    地球看上去就像一个巨大的蓝色玻璃球, 从高高的地球上空或从月球上望去，这颗行星熠熠生辉，闪闪发光。

2. Because the Moon has only an eightieth of the Earth´s mass,
    因为月球的重只有地球的1/8，

3. Because the gravity on the Moon´s surface is only a sixth of Earth´s (remember how easily the Apollo astronauts bounded along),
    由于月球表面的重力仅是地球表面的1/6 -- 还记得阿波罗飞船中的宇航员累松地跳跃 --

4. By comparison, nearly half of male high-school students express their preference for a traditional, male-headed, one provider, nuclear family, where the wife stays home as mother and housewife.
    与此相比, 几乎有一半男中学生表达了他们对传统的、以男人为家长的、只有一个人养家糊口的核心家庭的偏爱，在这种家庭里妻子作为母亲和家庭主妇呆在家里。

5. But for over half of his screen career, Chaplin had no screen voice to confirm his British nationality.
    而在卓别林大半的银幕生涯中，银幕上的他是不出声的，也就无法证明他是英国人。

6. But a single optical fiber with a diameter of less than half a millimeter can carry more information than a large cable made of copper wires.
    但是单单一根直径小于半毫米的光纤电缆就可以比由铜丝制成的粗电缆负载更多的信息。

7. Watching the first man land on the moon, we beheld a sighy never seen before by man .
    看那踏上月球的第一人，我们看到了人类所未见的景象。

8. While you are on the phone, the baby pulls the table- cloth off the table, smashing half your best crockery .
    你接电话时，小孩把桌布扯下来了，把你最好的陶器打碎了一半.

9. We have been in the institute for five months and a half.
    我们在这个学院已有五个半月了。

10. Well begun is half done.
    好的开端是成功的一半。