1. 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。
知识点1：has been able to tell 能够告诉
知识点2：比较学习：alive和living
1) alive常放在系动词之后作表语，或所修饰的名词之后作后置定语；
2) living则作前置定语，放在被修饰的名词之前，如：living man活着的人。
2. He noticed that a river of liquid rock was coming towards him.
他发现有一股岩浆正向他流过来。
知识点：a river of liquid rock 一股岩架
3. Tazieff has often risked his life in this way.
塔捷耶夫经常冒这样的生命危险。
知识点：risk one’s life 冒着某人的生命危险
4. Haroun Tazieff, the Polish scientist,has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
哈罗恩·塔捷耶夫是一名波兰籍的科学家，他投入了毕生的精力研究世界各地的活火山和深洞。
知识点：spend one's lifetime doing sth. 花费某人一生的精力去做某事
