汗牛充栋English Expression:
  • n.  enough books to make the ox carrying them sweat or to fill a house to the rafters— an immense number of books
  • n.  enough books to make the ox carrying them sweat or to fill a house to the rafters, an immense number of books
  • n.  (said of books, particularly those dealing with the same subject) numerous
  • n.  overabundant

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