That's a worrying problem.

那是一个让人担心的问题。

youdao

Thirdly, pollution is also a worrying problem—water in rivers and wells becomes undrinkable because of industrial wastes.

另外，因为工业污染，有些水已经不适宜饮用了。

youdao

The problem of middle school students' cheating in the exam has been a worrying problem in the practice of middle school management, so we should pay more attention to this problem.

中学生考试作弊问题已成为当前中学教育和管理实践中一个十分令人担忧的问题，必须引起我们的高度重视。

youdao

Joanna had a drinking problem or a former drinking problem and worrying about her was a habit.

NEWYORKER: Brooklyn Circle

He told the committee of senior Commons backbenchers that the MoD did seem to have "had a bit of a problem" with leaks - adding that this was "worrying when it is the department responsible for security".

BBC: PM quizzed by MPs over spending review

Embryologists in the past spent a lot of time worrying about something they called the French flag problem.

ECONOMIST: Genetic engineering