美国宪法建立在自由与公正的原则之上。

The American Constitution is ___founded on principles of liberty and justice.

他们牢固的友谊基于深厚的相互尊重。

Their strong friendship is ___founded on a deep sense of mutual respect.

联合国是基于促进世界和平的理念而创立的。

The United Nations was ___founded on the idea of promoting world peace.