须知xūzhī 1.对所从事的活动必须知道的事项(多用做通告或指导性文件的名称{oft. used in titles of notices or guidance documents}){notice; announcement; points for attention}: 游览～{tourist guide; information for tourists}|考试～{instructions on examination}|大会～。{conference guide} 2.一定要知道{must know; must be aware}: ～胜利来之不易。{One must be aware that victory is hard to come by.}