This is the culmination of the teaching of the Buddha: self-purification by self-observation.

这就是佛陀教导的精髓：透过自我观察以其达到自我净化。

The process that oiliness wastewater into water disappears as time goes on is called water self-purification.

进入水体的油污随着时间的推移会逐步消失，这就是水体的自净作用。

The process that oiliness wastewater into water disappears as time goes on is called water self - purification.

进入水体的油污随着时间的推移会逐步消失,这就是水体的自净作用.

The existence of this branch is of prime significance for the South China Sea hydrographic structure, water self-purification and air-sea heat transfer.

该分支的存在对南海水文结构、海水自净能力及海气热交换具有头等重要意义。

Many minerals in nature have the self-purification capacity to hold and stabilize deleterious contaminant, which can be used to deal with heavy metal contaminants .

自然界中的许多矿物自身赋有容纳和稳定有害物质的自净化能力，可用于重金属类污染物的治理。

The idea of environmental protection by controlling resource use as focal point and by improving end-of-pipe treatment and enhancing the self-purification capability of natural system was put forward.

提出了以控制资源消耗量为重点，进一步完善末端治理，提高环境自净能力，标本兼治的环境保护工作思路。