commencement
n. 畢業典禮
eg. Before leaving I attended the 47th commencement of Cornell on June 16, 1914.
離校之前，我還在1914年6月16日參加了康乃爾的第47屆畢業典禮。

podium
n. 講臺
eg. We're all anxious to hear Mrs. Zhuang Wei's remarks, so let us all welcome her to the podium.
我們都盼望聽到莊薇女士說幾句話，所以讓我們歡迎她上臺。

mega-billionaire
n. 超級富翁
eg. With the best will in the world you'll never become a billionaire．
就算使出渾身解數，你也成不了億萬富翁。

philanthropist
n. 慈善家
eg. The university was founded by a millionaire philanthropist.
這所大學的創建人是位腰纏萬貫的慈善家。

nerd
n. 狂熱愛好者；呆子
eg. A typical nerd is someone who wears glasses and carries a lot of books.
那就是典型的書呆子形象，戴著眼鏡，拿著許多書。