片语
Second Lower Class Honours二级乙等荣誉
second English class英语第二课堂
cabin class二等舱;特别二等舱(在一二等舱中间)
Second grade class二年级一班
second-class load二类负荷
tourist class二等舱;经济舱位
Second-class seat二等座
second-class enterprise二级企业
second-class loop二级环网
second-class seats二等座
Second grade class three二年级三班