When translating 'existential threat' into Chinese for academic papers, which expression is most appropriate?
答案解析
核心考点：术语翻译规范 解题思路：'existential threat'固定译法 选项分析：B正确（保留'existential'本义），A/C/D语义偏移 易错点：可能选择更口语化的翻译
正确答案：B