Please tell me how to unmount the disk safely.

Please close all files before unmounting the disk.

My favorite bird is the Oriental Greenfinch.

In this chemical experiment, we will observe the reaction using ammonium phosphate.

Ammonium carbonate is a compound commonly used in inorganic chemistry.

Ammonium nitrate is widely used in the manufacture of fertilizers and explosives.

In chemistry class, I learned about the properties of ammonium chloride.

There are a lot of cheap drinks at this bar.

Ian is my best friend.

He discarded a safe tile in Mahjong.