difficult problem
难题；难问题
no problem
没问题
problem solving
解决问题
optimization problem
[计]优化问题；最佳化问题
big problem
大问题
environmental problem
环境问题
social problem
社会问题
scheduling problem
排定问题
technical problem
技术问题
practical problem
实际问题
inverse problem
反问题
economic problem
经济问题
housing problem
住房问题；房屋问题
academic problem
学术问题
assignment problem
指派问题；分配问题；分派问题；配置问题
bottleneck problem
瓶颈问题
math problem
数学题
allocation problem
配置问题，分配问题
problem analysis
问题解析
financial problem
经济问题；经济困难
The problem is ongoing.
这个问题尚未解决。
the problem is not insoluble.
这一问题不是不能解决。
a problem in arithmetic
算数题
a problem child; problem customers.
难以管理的孩子；难对付的顾客
understate a problem
低调处理某问题
the problem of soil erosion.
水土流失问题。
an imponderable problem of metaphysics.
难以回答的形而上学的问题。
the obstinate problem of unemployment.
失业这个顽固的难题。
chew a problem over.
仔细思考问题
The problem is too elaborate.
问题太复杂。
The drug problem is international.
毒品问题是世界性的。
The problem is ripe for settlement.
解决这个问题的时机已经成熟。
This problem will not work out.
这个问题解答不了。
an elementary problem in statistics.
统计学的基本问题
a hypothetical problem
假设的问题
theorise about a problem
就某问题进行推测
couldn't get the problem into focus.
不能很清楚地理解这个问题
the problem isn't exclusive to Dublin.
这一问题不是都柏林所特有的。
Solved problem number one, now to problem number two.
问题一解决了，再来是问题二。
来源: Villains' Tea PartyThey call the problem " colony collapse disorder."
他们将这一现象称之为“蜂群崩溃综合症”。
来源: VOA Special August 2015 CollectionThere are enough problems now without sin.
麻烦已经够多了，还想什么罪过。
来源: The Old Man and the SeaI've encountered this problem before, my lord.
我也有过这毛病 大人。
来源: Game of Thrones Season 2Behavioral economists approached the problem a little differently.
行为经济学家对这个问题的看法略有不同。
来源: Economic Crash CourseThere is also the problem of smog.
同时，还有烟雾问题。
来源: Yilin Edition Oxford High School English (Elective 9)We haven't had any problems so far.
到目前为止没有什么问题。
来源: Longman Office Workers' Daily Professional Technical EnglishThe government should squarely face the problem and take a down-to-earth attitude toward it.
政府应该面对问题，并采取实事求是的态度。
来源: 50 Sample Essays for English Major Level 8 Exam MemorizationWe're having some problems with the budget.
我们的预算有些问题。
来源: New Cambridge Business English (Elementary)But this isn't simply a both sides problem.
但是这不仅仅是一个" 两边都有错" 的简单问题。
来源: Hillary's 2018 Yale University graduation speech探索常用高频词汇