~~~ var1 := "s1", var2 := "s2", var3 := "s3" ;方式1 var4 := var1 "-" var2 var3 "-" "-" ;方式2 var5 := var1 . "-" . var2 . var3 . "-" . "-" var6:="s6" var6.=var5 ;方式3 var7.= "s7:" var6 Pause ~~~