exercise for the reader

名词 n.

英文释义

名词 n.
  1. Used other than figuratively or idiomatically: see exercise, for, the, reader.
  2. A matter left to the addressee's judgement to decide. broadly
    — She does not ask to see the dossier on this man before she goes, even though the co-worker has said that he has seen it, etc. The credibility of this conduct is another matter and is left as an exercise for the reader.

词形变化

exercises for the reader plural

词源

From academic writing. One of the first known recorded occurrences of this phrase is in An Elementary Course of Mathematics by Thomas Stephens Davies, Stephen Fenwick, and William Rutherford from 1853.
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