1、The country issued an ultimatum to the opposing faction, demanding immediate surrender.
那个国家向对立派别发出了最后通牒,要求立即投降。
2、She delivered an ultimatum to her boyfriend, saying that he had to choose between his job and their relationship.
她向她男朋友提出了最后通牒,表示他必须在工作和他们的关系之间作出选择。