adj. 困难重重；难以处理
Driving in Beijing can be quite problematic.
Acquiring an adequate vocabulary has been highly problematic for most learners.
Ride-sharing services remain problematic.
A population-planning document released last year acknowledged that the low birth rate was problematic.
翻译：Acquiring diphthongs in English is quite problematic for Chinese students.
造句：Thinking without doing is always problematic for many people.
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