下面这段代码输出的内容

package main

import (
    "fmt"
)

func main() {
    defer_call()
}

func defer_call() {
    defer func() { fmt.Println("打印前") }()
    defer func() { fmt.Println("打印中") }()
    defer func() { fmt.Println("打印后") }()

    panic("触发异常")
}

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