“alums”造句，怎麼用alums造句

"The most important alums are those of potassium sulfate (potassium alum, or potash alum, K2SO4*Al2(SO4)3*24H2O), ammonium sulfate, and sodium sulfate."

Although the presentation is just an academic exercise, several rocket-crew alums go on to work for NASA, which has its Marshall Space Flight Center just down the road from UAH.

It also places more designers in the industry than any other institution; alums include heads of design at divisions of Toyota, GM, Nissan and Mercedes-Benz.

Today, though, the job of college President is less and less removed from that of the Avon lady (except the house calls are made to the doorsteps of wealthy alums).