1. One kilogram of beef requires 7 kilograms of grain. People, therefore, may eat less red meat in the future and more fish.
    生产1公斤牛肉需要7公斤谷物。因此，人们在将来可能会少吃红色肉类，多吃鱼类。

2. On one occasion, when Cavalli-Sforza was taking blood samples from children in a rural region of Africa, he was confronted by an angry farmer waving an axe.
    有一次在非洲乡下，正当卡瓦里-斯福尔扎要从儿童身上采血时，一个愤怒的农人手执斧头出现在他面前。

3. That the blood poison is, so to speak, a newer product from an improved formula.
    而溶血性毒液，打个比方说，是根据改良配方生产的一种较新的产品。

4. I took this picture with a red filter.
    这张照片我是用红色滤光镜拍摄的.

5. If you got a deep cut in your arm, there´s usually a gush of blood.
    假使你的手臂有很深的割伤

6. In the play, she must appear in a bright red dress and long black stockings.
    在这出戏里她得穿一件鲜红的长裙和长统的黑袜。

7. I wrapped the present in red paper.
    我把礼物用红纸包了起来。

8. It is a world of red sandy deserts (hence its name----the Red Planet), cloudless skies, savage sandstorms, chasms wider than the Grand Canyon and at least one mountain more than twice as tall as Everest.
    这是一个红色沙漠的世界（因而得名：红色行星），无云的天空，凶猛的沙暴，比大峡谷还宽的裂缝，起码有一座山有珠穆朗玛峰的近两倍高。

9. In the play, she must appear in a bright red dress and long black stockings.
    演出时她必须穿一条鲜红色的裙子和黑色的长筒袜。

10. It had a head like a horse, big blue eyes, shining silver skin, and a bright red tail.
    它长着一个像马一样的头，有着大的蓝眼睛和闪闪发光的银色皮肤，还有一条鲜红色的尾巴。