do without or cease to hold or adhere to
同义词：waive??/??relinquish??/??forgo??/??dispense with
turn away from; give up
同义词：renounce??/??quit??/??relinquish
As long as the United States foreswears sea-, air- and space-based missile defenses in particular, it will be unable to develop, to say nothing of deploy, effective anti-missile systems.
CENTERFORSECURITYPOLICY: Which Bush on Missile Defense?
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。