词典释义：
an object used to indicate a position, place, or route
标识，标志；指示牌
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they erected a granite marker at the crash site 他们在坠毁地点树立花岗岩纪念牌
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[as modifier]
a marker post .标志杆。
[in sing.]a distinctive feature or characteristic indicative of a particular quality or condition
（性质或状况的）标志
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identification with one's own language has always been a marker of nationalism .对本族语的认同从来就是一种民族主义的标志。
a thing serving as a standard of comparison or as an indication of what may be expected
参照标准
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he has already laid down a marker by setting a fast time during practice .他已经在练习中达到高速从而已经定下了参照标准。
【遗传】 标志基因。
a radio beacon used to guide the pilot of an aircraft
无线电导航信标。
〈北美，非正式〉 本票；借据。
(亦作
记号笔。
a player in a team sport who stays close to a particular opponent to prevent them from getting or passing the ball
（体育比赛）盯人队员。
a person who assesses the standard of a written test or examination
打分员，评卷员，阅卷人。
a person who records the score in a game, especially in snooker or billiards
（比赛，尤指斯诺克或台球）记分员。
