To raise a siege

to relinquish an attempt to take a place by besieging it, or to cause the attempt to be relinquished.

See also: Raise

随便看

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。