a difficulty that needs attention and thought
a question, especially connected with numbers, facts, etc., for which an answer is needed
"she and her husband are having problems"
"it is always a job to contact him"
"urban problems such as traffic congestion and smog"
"our homework consisted of ten problems to solve"
"one trouble after another delayed the job"
"what's the problem?"
The problem with Lucasta Is how to keep her fed between meals.
出自： T. S. Eliot
One of the most pressing problems was a stagnant economy.
出自： Lyndon B. Johnson
Listening to his friends..telling him about their problems.
出自： D. Rowe
The problem lay in explaining her presence on Floor One.
出自： M. Hughes