n.

1. （社会的）阶级；社会等级[C][G]
   They hope to win mass support among the middle class.

   他们希望能赢得中产阶级的广泛支持。

2. 等级制度[U]
3. 班级；年级[C][G]
   The class were/was interested in his lecture.

   班上学生对他的讲座都很感兴趣。

   Are you in the third-year class?

   你是读三年级吗？

4. （一节）课；上课[C][U]
   No talking is allowed during class.

   上课时不准交谈。

5. （高低优劣的）等级；种类[C]
6. 【美】（某一年度的）毕业班[C][G]
   a class of 1994

   一九九四年毕业班

7. 【生】（动植物分类的）纲[C]
8. 【口】高质量；出色的风度（或外表等）[U]
   a girl with real class

   很有风度的姑娘

vt.

1. 把……分类；把……分等级；把……归入某类（或某等级）[（+as/among/with）]
   That state is classed as an agricultural area.

   该州被划为农业区。

n.

1. a set or category of things having a property or feature in common and differentiated from others by kind or quality.
   ▸Biology  a principal taxonomic grouping that ranks above order and below phylum or division, such as Mammalia.
   ▸Brit. a division of candidates according to merit in a university examination.
2. a system that divides members of a society into sets based on perceived social or economic status.
   ▸a social division based on economic or social status.
3. a group of students or pupils who are taught together.
   ▸a lesson.
   ▸chiefly N. Amer. all of the college or school students graduating in a particular year.
4. informal impressive stylishness in appearance or behaviour.

v.

adj.