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单词 endorphin
释义 endorphin
 /en dawr"fin/,  n.  
 any of a group of peptides occurring in the brain and other tissues of vertebrates, and resembling opiates, that react with the brain's opiate receptors to raise the pain threshold.
 [1970-75; end(ogenous) (m)orphine, with -ine resp. as -IN2]
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