marker ['mɑ:kər]读作：马克尔
n.记分员；书签；标识物；作记号的人
例句：
1.the marker had recorded a 5 when,in fact,the competitor had scored 4.
记分员当时记录的成绩是5杆,而事实上比赛者的成绩应该是4杆.