1. And we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
    我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。

2. A few months later, a couple of almost comic body-thieves stole his body from the family burial chamber and held it for money: the police recovered it with more efficiency than Mack Sennett's clumsy Keystone Cops would have done.
    几个月后，几个近乎可笑的盗尸者从他的家庭墓室盗走了他的尸体以借此诈钱。警方追回了他的尸体，其效率比麦克·塞纳特拍摄的启斯东喜剧片中的笨拙警察要高得多。

3. So was born the echo-sounding apparatus, now in general use in ships.
    这样就产生了目前各种船舶上普遍应用的回声探测仪。

4. Extraordinary discovery of echo-location in bats to see a case in which the vioce plays a strictly utilitarian role.
    我们只要从蝙蝠的回声定位这一项非凡的发明中, 就能看到声音起的纯粹实用作用的例子.

5. Inside our clear chamber, we were warm and comfortable, but outside was a whole different world.
    坐在透明的机舱内，我们觉得温暖而舒适，然而外面却是一个截然不同的世界。