they would devour all our crops and kill our flocks and herds, if it were not for the protection we get from insect-eating animals.

昆虫会吞食我们的全部庄稼，杀死我们的成群的牛羊。

So while the rest of the world was trying to get rid of mosquitoes, Australia was encouraging this one.

因此，世界上其他地方在设法消灭蚊子的时候，澳大利亚却在促使这种蚊子大量繁殖。

Men accustomed to struggling for survival against the elements and Indians were bewildered by politicians, bankers and businessmen, and unhorsed by fences, laws and alien taboos.

习惯与大自然和印第安人作斗争以求生存的拓荒者被政客、银行家和商人搞得晕头转向，最后被圈地、尖律我外来的清规戒律所击败。

This modern faith in medicines is proved by the fact

这个事实证实了现代人对药物的信赖。

and however well society, and our doctors, look after us.

不管社会和医生怎样对我们进行精心照顾，

at eighty can knock us out, and into our grave.

能到了80岁可能会使我们一蹶不振而进入坟墓。