Cadmean

例句：

1. 1.The cadmean is a popular type of car in the United States.
   凯门是在美国流行的一种汽车。
2. 2. The cadmean has become a symbol of American culture.
   凯门已成为美国文化的象征。
3. 3. The cadmean was designed to be easy to drive and maintain.
   凯门的设计旨在易于驾驶和维护。