Without such security men are reduced to a primitive life of fear and self-defense, with every neighbor a potential enemy ready to plunder what another has produced.

如果没有这样的安全保障，人们就回到原始的恐惧和自我防卫状态，每个邻居都是对另一个人生产的东西准备掠夺的潜在敌人。

youdao

We provide security definitions for this primitive and study its basic properties.

我们给出了这项初步工作的安全性定义，并研究了它的一些基本性质。

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During the '50s, even the '60s, security analysis and money management dwelled in a comparatively primitive stage.

FORBES: Managing Money