The causes are omnifarious, continuous consideration and putting forward countermeasures to solve the problems are needed.

其原因是多方面的，需要不断思考，提出解决问题的对策。

youdao

The causes are omnifarious, continuous consideration and putting forward countermeasures to solve the problems are needed.

其原因是多方面的，需要不断思考，提出解决问题的对策。

youdao