alum是什么意思

音标:英 [ˈæləm]美 ['æləm]

明矾, 矾, 校友[化] 明矾; 钾铝明矾

a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum
a double sulphate of aluminum and potassium that is used as an astringent (among other things)

alum的用法和例句：

1. He's an alum, as the majority of the staff there.

他跟大部分员工一样都是老校友

2. The judge was an alum, so he got off with probation.

法官是校友 所以他得以缓刑脱身

3. It's a chance to meet parents, alums, make some connections.

可以见见别的父母 校友 互相认识一下

4. I'm an alum who's provided guidance to some of the school's wayward students.

我长期以来都在对一些 不听话的学生提供心理指导

5. Was gonna cancel the memorial, too, but some of the alums said they'd go through with it anyway.

本来也准备取消纪念活动 但有些校友说 他们无论如何都要把纪念活动进行到底

6. This is where our brandnew, stateoftheart training facility will be located made possible by the generosity of you, our illustrious donors and alums.

我们全新顶尖的训练场馆 即将落建在这里 由于各位杰出捐赠者及校友们的慷慨解囊 促成了此项工程