problem
英 ['prɒbləm]
美['prɑbləm]
	    - n. 难题;引起麻烦的人
 - adj. 成问题的;难处理的
 
英英释意
- 1. a state of difficulty that needs to be resolved;
 - "she and her husband are having problems"
 - "it is always a job to contact him"
 - "urban problems such as traffic congestion and smog"
 
- 2. a source of difficulty;
 - "one trouble after another delayed the job"
 - "what's the problem?"
 
- 3. a question raised for consideration or solution;
 - "our homework consisted of ten problems to solve"