Golang遵循正则表达式删除“以及在字符串中包含@之后的任何内容(Golang compiled regex to remove " and anything after and including @ in strings)

One way you could do this based off your example input.

package main

import (
   "fmt"
   "regexp"
)

func main() {
   s := `"Abraham Lincoln" @en`
   reg := regexp.MustCompile(`"([^"]*)" *@en`)
   res := reg.ReplaceAllString(s, "${1}")
   fmt.Println(res) // Abraham Lincoln
}

If you have more data that follows the quotes, you could always change the expression to:

reg := regexp.MustCompile(`"([^"]*)".*@en`)