A new problem has arisen.

出现了新问题。

《新英汉大辞典》

With the popularity of private cars, a new problem has arisen that the traffic is too heavy, especially during rush hours.

伴随着私家车的普及，一个新的问题出现了。交通太繁重了，特别是在交通高峰期。

youdao

With the popularity of private cars, a new problem has arisen that the traffic is too heavy, especially during rush hours.

伴随着私家车的普及，一个新的问题出现了。交通太繁重了，特别是在交通高峰期。

youdao