基本解释（网上聊天时的用语）重新回到键盘旁（back at the keyboard的缩写）。同根派生 bak相关词英英字典剑桥英英字典 written abbreviation for back at the keyboard: used when you return to a discussion in an internet chat room after you have left it for a short timebak剑桥字典bak柯林斯字典