Qed
abbr. quantitative evaluative device 定量可估價的裝置; quantum electrodynamics 量子電動力學; quick-reaction dome 快速反應罩
?? 牛津釋義
QED
abbr 縮寫 = which was to be proved (Latin quod erat demonstrandum) 證明完畢（源自拉丁文quod erat demonstrandum）.
??? 情景例句
I'm doing great.
我很好。
The braying of an ass does not reach heaven.
驢子的叫聲傳不到天上。
Oh, Pierre, how wonderful! But I don't think we can go. I haven't got an evening dress for the ball! And a new dress costs over four hundred francs.
啊，比爾，太棒了！不過，我想我們去不成。我沒有參加舞會的晚禮服啊！而一件新的晚禮服得花400多法郎。