- A representation of a human skull above two long crossed bones, a symbol of death once used by pirates and now used as a warning label on poisons.骷髅画，骷髅旗：在两根相交的长骨上的人的头盖骨的表示，曾被海盗用来作为死亡的象征，如今被用作有毒物品上的警告性标签
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