英语词汇ex cathedra的起源、历史背景-英语词源词典

词汇	ex cathedra
词源	ex cathedra. Someone speaking ex cathedra, especially the pope, speaks with the authority of his or her office, the pope’s pronouncements infallible.
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英语词源词典收录了13259条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。