3. Several neighbors hope to find safety in the only bomb shelter on their street when an announcement comes over the radio that enemy missiles are approaching.

　　结构：共有3个谓语动词，主句的是hope。that引导的是an announcement的同位语从句，原型是an announcement that enemy missiles are approaching comes over the radio。但是，由于谓语动词太短，造成头重脚轻，所以同位语从句被放到了后面。拆分为：

　　1) Several neighbors hope to find … on their street.

　　2) When an announcement comes over the radio.

　　3) That enemy missiles are approaching.

　　翻译：当电台里面宣布敌人的导弹袭来的时候，有几个邻居希望能在街上唯一的避弹所里找到藏身之处。

　　4. The willingness to recognize the value of these newer “unscientific” ways of doing science may be another instance of the human ability to adapt and survive, of which we spoke earlier.

　　结构：共有2个谓语动词，主句的是may be。主干是The willingness…may be another instance…。of which引导非限定性定语从句，修饰the human ability，被to adapt and survive分隔。

　　1) The willingness to recognize the value of these newer “unscientific” ways of doing science may be another instance of the human ability to adapt and survive.

　　2) We spoke of the human ability.

　　翻译：认识到从事科学工作的一些更新颖的、“非科学”方法的价值的愿望，也许是我们早先提到过的人类所具有的适应能力和生存能力的另一个例子。

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