package main import ( "fmt";"time" ) func 倒计时(秒数 int){ for i:=秒数;i>0;i--{ fmt.Println(i) time.Sleep(1*time.Second) } } func main() { go 倒计时(5) fmt.Println("准备发射火箭...") time.Sleep(3*time.Second) fmt.Println("点火检查成功") time.Sleep(6*time.Second) }