四用英语怎么说

"How to say [四用英语怎么说] in English?"

The translation of "四用英语怎么说" is not a standard English phrase or term. It appears to be a request for the English equivalent of a specific Chinese term or expression that is related to a particular field or concept, which cannot be deduced from this context. If you could provide more information or clarify the intended meaning, I would be happy to help further.