alum

中文含义：明矾；校友

英语词性：noun

美式发音：əˈlʌm

同义词：alumna, graduate

易混淆单词：aloud, album

双语例句：

1. The water from the alum quarry was believed to have curative powers.

明矾矿的水被认为具有疗效。

2. The school is proud of its noted alum who went on to become successful entrepreneurs.

学校为那些成为成功企业家的著名校友感到自豪。