“无效的”概念、定义、翻译-科学时代

单词	无效的
释义	请查阅零--无效的
随便看	arm's length transaction arm's length transaction arms limitation arms material position arms merchant arms procurement arms race arms race arms race arm's reach arms sale arms supplies arms trade arms trade market arms transfer Armstrong，Louis arm travel army army achievement medal army aircraft army air defense army air force Army Alpha Test army area army artillery

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。