人数到期英文

The size of class is ...The population is ... (人口)I need a head count. There are ... students/people in the class.

Number.比如7班的人数是36The munber of class 7 is 36.

英文：expired

Expire英[]ɪkˈspaɪə(r)美[]ɪkˈspaɪr词典释义expirevi.期满；文件、协议等（因到期而）失效；断气；逝世matureadj.（人、树木、鸟或动物）成熟的；仔细考虑过的；到期（应该支付）的；成年人的become due到期，满期at maturity到期at termadv.到期

due到期日:due date ,deadline,expire date

国外一般用population比较多