orders are orders idiom
（通常指虽然不赞成但）命令就是命令，命令必须执行
said when you have to do something because someone in authority has told you to, and usually when you do not really approve of it
Nobody wants to do it, but orders are orders, so let's start. 谁也不想做这事，但命令必须执行，所以我们开始吧。