| 单词 | problem | 
| 释义 | Word Frequency problem(ˈprɒbləm) noun 1.  a.  any thing, matter, person, etc, that is difficult to deal with, solve, or overcome  b.  (as modifier)  a problem child 2.  a puzzle, question, etc, set for solution  3.  mathematics a statement requiring a solution usually by means of one or more operations or geometric constructions  4. (modifier)  designating a literary work that deals with difficult moral questions  a problem play Word origin C14: from Late Latin problēma, from Greek: something put forward; related to proballein to throw forwards, from pro-2 + ballein to throw | 
	
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