法律体系是根据其自身的有效性标准而有效的规则体系。
A legal system is a system of rules which are valid according to the system's own criteria of validity.
释义:人际关系如果疏远了,就难以恢复;事情如果积累多了,就难以解决。说明了做人要重视人际关系的互动。