Xì / tǒng / ǒu / fā / gù / zhàng / shí / , / yòng / hù / kě / néng / xū / yào / chóng / xīn / dēng / lù / 。系统偶发故障时,用户可能需要重新登录。When the system has an occasional fault, users may need to log in again.