1. It may also be said that rational, industrious, useful human beings are divided into two classes:
    也可以这样说，理智的，勤劳的、有用的人可以分为两类：

2. It immediately ran away when she saw it, and experts confirmed that a puma will not attack a human being unless it is cornered.
    她刚看见它，它就立刻逃走了。专家证实，美洲狮非被逼得走投无路，是决不会伤人的。

3. In seeking independence, they do not sacrifice their human dignity.
    在追求独立自由的同时，他们并不牺牲为人的尊严。

4. In peace, too, the Red Cross is quick to send help wherever there is human suffering.
    在和平时期，无论哪里的人遭难，红十字会总是及时提供救援。

5. In the end the hypothesis that mosquitoes transmit malaria to human beings could be tested only by direct experiment — on man.
    最后，关于蚊子给人类传播疟疾的假设只有直接通过人来进行实验。

6. I felt human then. But most often the response was either nothing at all, or a surprised stare because I had spoken.
    这种时侯，我还是感到自己是个人。可多数情况下，人们的反应要么是不理我，要么是因为我这垃圾工竟然也说了话而惊讶地盯着我看。

7. I assumed because I didn't believe in violence, because I wasn't violent, I wouldn't be affected by violence. I believed my belief in the best of human nature could make it real.
    我应该把枪从住所带到车上，但是我没有。这支枪的功能，以及使用它的目的比用它所能阻止的事件更让我感到恐惧。

8. In terms of the evolution of life on Earth, human beings have just arrived.
    就地球上生命的进化而言，人类是姗姗来迟者。

9. Which hopes to use human DNA to build specialized proteins that may have some value as disease-fighting drugs.
    医学界希望能用人类脱氧核糖核酸（DNA）制成特别的蛋白质，这些蛋白质具有某种抗病药物的价值。

10. In a recent cover story, Time magazine sorted through the current thinking on intelligence and reported, "New brain research suggests that emotions, not IQ, may be the true measure of human intelligence."
    《时代周刊》最近的封面故事列举了关于智能的一些流行看法，报道说，"新的人脑研究表明，情感，而不是智商，可能是衡量人的智能的真正尺度。"