Ritual impurity also defiles or renders impure sancta, and so it has to be kept separate from sancta.

仪式上的不洁也会玷污或弄脏圣所，因此它必须远离圣所。

耶鲁公开课 - 旧约导论课程节选

So to be pure, one must separate ones self from sources of impurity.

想要变得纯洁，我们必须远离不纯洁的来源。

耶鲁公开课 - 旧约导论课程节选