common computer software

例句：

1. 1.The common cold is a very common illness.
   普通感冒是一种非常常见的疾病。
2. 2. He works in a common office building.
   他在一座普通的办公楼工作。
3. 3.She wears a common dress for the party.
   她穿着一件普通的连衣裙参加聚会。