不必挽留的英语怎么说

"不必挽留"的英文表达是 "there is no need to persuade/persuade further" 或 "there is no need to try to keep (someone) from leaving/going".
这个表达来源于英文中的动词 "persuade"，意思是说服、劝说。挽留的意思是试图阻止某人离开或继续做某事。所以 "不必挽留" 的意思就是没有必要试图阻止某人离开或停止做某事。
以下是一些例句：
"There is no need to persuade further. I've made up my mind." (不必再劝了，我已经决定了。)
"There is no need to try to keep me from leaving. I've decided to go." (不必试图阻止我离开，我已经决定去了。)