词汇：“班长”与“委员”

monitor 班长;

　　vice-monitor 副班长;
　　commissary in charge of studies 学习委员;
　　commissary in charge of entertainment 文娱委员;
　　commissary in charge of sports 体育委员;
　　commissary in charge of physical labor 劳动委员;
　　commissary in charge of publicity 宣传委员