a struggle for existence的意思|示意

Life is a struggle for existence; only the fittest (meaning the wealthiest or most powerful) survives.

生活即生存斗争，唯适者(即最富有或最强壮者)生存。

Malthus held that the human population tended to increase faster its food supply. This set up a struggle for the food and hence a struggle for existence.

马尔萨斯认为，人口增长有超过食物供应的趋势。这便导致为食物而争斗，因此，为生存而争斗。

But this is wrong, because man owes his strength in the struggle for existence to the fact that he is a socially living animal.

但这是错误的，因为人们进行生存竞争的力量，完全在于他是一个社会性的生活着的动物。

The struggle for existence, in the case of a newspaper, has been a struggle for ciuculation.

就一份报纸而言，为生存而战一直以来就是争夺发行量。

Most animals have to struggle for existence in a dangerous world.

在一个充满危险的世界里，动物不得不为了生存而斗争。

Most animals have to struggle for existence in a dangerous world.

大多数动物得在一个充满危险的世界上为生存而竞争。