河口海岸地处陆海交界的过渡地带，是四大圈层相互作用和各类界面的汇聚地带。
The estuary region locates at the interaction of the rivers and oceans, is the interactional area of 4 spheres and various interfaces.
地球表层的岩石圈、水圈、大气圈和生物圈相互作用，相互影响，其中任何一个圈层发生巨变，必将作用和影响其它圈层。
The lithosphere, hydrosphere, atmosphere and biosphere on the surface of the earth interact each other. Each of them have a big change will surely affect the others.
地球表层的岩石圈、水圈、大气圈和生物圈相互作用，相互影响，其中任何一个圈层发生巨变，必将作用和影响其它圈层。
The lithosphere, hydrosphere, atmosphere and biosphere on the surface of the earth interact each other. Each of them have a big change will surely affect the others.
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