a social group consisting of the people who have the highest social rank and who are usually rich

The upper classes usually send their children to expensive private schools. 富人阶层一般把孩子送往学费昂贵的私立学校。

Compare: lower class middle classworking class noun

belonging or relating to a social group consisting of the people who have the highest social rank and who are usually rich

She comes from a very upper-class family. 她来自一个非常上层的家庭。

Her French was good but spoken with an upper-class British accent. 她的法语很好，但说起话来有英国上层社会的口音。

Her husband was more upper-class than she was. 她的丈夫比她更有上流社会的身份。