four-edged bit

例句：

1. 1.The four-edged sword of war is a symbol of power and danger.
   战争的四刃剑象征着权力和危险。
2. 2.In the old days, the four-edged sword was used to protect villagers from bandits.
   在旧时代，四刃剑被用来保护村民免受强盗的侵害。
3. 3.The four-edged sword of fate has been wielded by many great leaders throughout history.
   命运的四刃剑被许多伟大的领袖挥舞过。