be emphatic or resolute and refuse to budge
同义词：insist
Unless President Obama takes a firm stand, I expect that the U.S. will once again insist on keeping its smallpox stores.
FORBES: It's time to destroy the U.S. smallpox reserves
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。