“一无所知”常见的英文表达有 “know nothing about” 或 “be completely ignorant of”。以下为你详细介绍：
含义：表示对某事或某物完全没有知识或了解。
例句：
I know nothing about cars, so I can't help you choose one.（我对汽车一无所知，所以没法帮你选一辆。）
He knows nothing about art, but he pretends to be an expert.（他对艺术一无所知，却假装是个专家。）
含义：“ignorant”意思是“无知的；不了解的”，“be completely ignorant of”强调完全不知道、对某方面毫无认识。
例句：
I was completely ignorant of the history of this ancient city before I came here.（在来这里之前，我对这座古城的历史一无所知。）
Many people are completely ignorant of the dangers of smoking.（很多人对吸烟的危害一无所知。）