SCPs used to contain other SCPs.

SCP 曾经包含其他 SCP。

It’s even been used by the Foundation as a pacification tool to reduce aggression in other SCPs.

它甚至被基金会用作安抚工具，以减少其他 SCP 的攻击性。

The first of the Primary Object Classes is “Safe”, pertaining to SCPs that require little if any resources to safely and properly contain.

主要项目等级中的第一个是“ Safe”， 属于不需要任何资源即可安全妥善收容的 SCP。