suicide pact

剑桥词典

an agreement between two or more people to kill themselves together at the same time
（集躰）自殺協定
The leader of the religious sect and 30 of his followers killed themselves in a suicide pact last year . 去年那個宗教教派的領袖同30名追隨者簽署了自殺協定，集躰自殺了。 返回 suicide pact