His behavior has deep root causes.

他的行为有深层的词根。

The core concept of Natural Beauty takes its deep root in the soil of the Chinese culture.

自然美的核心理念，植根于深厚的中国文化土壤。

Choosing deep root system and strong spring species when planting a mixed forest can be effective against forest fires.

营造混交林时，选择根系深、萌蘖强的树种可以有效地抵御森林火灾。

Developing the economy in counties is an important approach to guide a harmonious development of the urban and rural areas, and it can solve the three critical issues from the deep root.

发展、壮大县域经济是统筹城乡发展、从根本上解决“三农”问题的重要载体。