请问“立足于”用英语怎么说啊?另外,"base on"和“base to"这两个短语分别应该怎样用呢?

立足于 be based onbe based on independence and self-reliance 立足于独立自主和自力更生base on 基于,建立在...strategy and tactics based on a people's war建立在人民战争基础上的战略战术没有见过base to的用...