1. But the chances are against it, and there is a virtual limit on how long we can hope to remain alive, however lucky and robust we are.
    但这种可能性很小。不管我们多么幸运，多么健壮，我们所希望的长寿实际上是有限度的。

2. For me and a classmate (and maybe for some who read this account), the experience made a common claim come alive.
    只是，对于我和我的一位同学（也许还有哪些看到这篇报道的人）而言, 这项活动使一个人皆知之的观点变得真真切切了。

3. Whether it be bird, fish or beast, the porpoise is intrigued with anything that is alive.
    海豚对凡是活的东西都感兴趣，不管是鸟、是鱼，还是野兽。

4. When the brothers were reunited, Hans explained how it was that he was still alive.
    兄弟俩团聚之时，汉斯说明了他活下来的经过，

5. The African had a passion to keep his African origin alive.
    “老非洲”有一股强烈的感情，要让他的子孙后代记住他们的祖先是非洲人。

6. He may hunt, beg, or steal occasionally to keep himself alive;
    为了生存，他可能会去打猎、乞讨，偶尔偷上一两回；

7. He has been able to tell us more about active volcanoes than any man alive.
    他能告诉我们的有关活火山的情况比任何在世的人都要多。

8. About twenty eight people. Most of them like seafood, so I bought al lot of it. Look! The eels are still alive.
    大约二十八人, 他们大多喜欢海鲜, 所以我买了很多海鲜. 看啊!那鳗鱼还活着.

9. A number of domestic animals have some utility for man while they are alive.
    一些家畜在活着的时候对人类有一定的用途。

10. A long-lost brother, who was presumed dead, was really alive all the time and wickedly plotting to bring about the hero´s downfall. And so on.
    主人公一位长期失散的兄弟，大家都以为死了，实际上一直活着，并且正在策划暗算主人公；如此等等，