| 单词 | marker | 
| 释义 | Word Frequency marker(ˈmɑːkə) noun 1.  a.  something used for distinguishing or marking  b.  (as modifier)  a marker buoy 2.  a person or thing that marks  3.  a person or object that keeps or shows scores in a game  4.  a trait, condition, gene, or substance that indicates the presence of, or a probable increased predisposition to, a medical or psychological disorder   biological marker,  genetic marker,  medical marker  | 
	
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