| 释义 |
if and only if WordReference English-Chinese Dictionary © 2019:主要翻译英语中文if and only if conjconjunction: Connects words, clauses, and sentences--for example, "and," "but," "because," "in order that." (on the strict condition that) (强调用语)在…情况下而且只有在此种情况下 zài |