second-class

1.次要的；无足轻重的less important than other people

2.（质量、标准等）二流的，次等的of a lower standard or quality than the best

3.[obn]（车厢、船舱等）二等的connected with the less expensive way of travelling on a train, ship, etc.

4.[obn]第二类的（英国邮件等级，投递较第一类慢，邮资也较低）(in Britain) connected with letters, packages, etc. that you pay less to send and that are delivered less quickly

6.[obn]二级优等的（英国大学学位）used to describe a British university degree which is good but not of the highest class

1.〈英〉第二等的,次级的

2.第二类的

3.第二流的

1.乘二等车地;坐二等舱地

1.low in quality or importance; treated as if you are not as good or important as other people

2.relating to a system in the U.S. for sending newspapers and magazines in the mail

3.traveling in second class