welcome to back和 welcom back哪个对?

welcome to back和 welcom back哪个对? welcome back to school 和welcome to school 哪个对 welcome back to 与 welcom come to 分别是什么意思?如题 谢谢了 welcome back to schoo welcome back to school. Welcome back to here back to shanghai.back shanghai哪个对 back home.back to home哪个对? Welcome Welcome Welcome back Welcome back to scool.中文翻译 Welcome back to school.中文 Welcome back to school是什么意思