I have a very, very impolite friend who likes to touch my 3D printed models without permission.
So, I made a sign suitable for any item you don't want people to touch, simply informing them of the consequences of touching without permission (of course, "kill you" is just a joke).

我有一位非常非常不禮貌的朋友，他喜歡未經允許觸碰我的3D列印模型。
因此，我製作了一個適用於任何你不想讓人碰觸的物品的告示牌，僅是告知他們未經允許觸碰的後果（當然，“kill you”只是個玩笑）。