The phrase "根据对吗用英语怎么说" can be translated to "how do you say it in English if we're checking if it's correct?" In other words, it's a request for the English translation of something that's being checked for accuracy. It's a common question in language learning and translation work, where ensuring accuracy is key. Asking for the English version of something being checked can help verify its correctness and help identify errors or ambiguities. So, in summary, "根据对吗用英语怎么说" means "how do you say it in English if we're checking if it's correct?"