这是一条原则铺就之路，这是一条通往个性之路。

It's a path made of principle... that leads to character.

youdao

当然，一周之内可以间隔2 - 3天涂一次指甲油，但至少，一周要有一天定为“不涂指甲油日”，这是一条原则。

Of course, within a week can be spaced 2-3 days painted a nail polish, but at least a week to have day as "no nail polish on," This is a principle.

youdao

在生活中，这是我们都需要练习，践行的一条原则。

This is something, we all need to practice and implement in our own lives.

youdao