违反诺言 meaning in English

break a promise

This shift was intended to release beijing from its 2001 commitment to exchange maps with india of first the western sector and then of the eastern sector - a pledge it had already breached by missing the mutually agreed deadlines
这种转变是为了把北京从2001年的承诺中解放出来，根据承诺，北京与印度交换地图，先是西边，然后是东边，北京已经错过双方商定的最后期限，违反诺言。