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1·We call all of this the land phase of the Phosphorus cycle.

我们把这称为磷循环的陆地阶段。

2·The Phosphorus cycle has been studied a lot by ecologists because like I said, Phosphorus is an important nutrient and it's not so abundant.

生态学家对磷循环进行了大量研究，因为如我所说，磷是一种重要而不充足的营养物质。

3·The three most important nutrient recycles are the nitrogen cycle, the carbon cycle and the one we are going to talk about today, the Phosphorus cycle.

这三种最重要的营养循环包括氮循环、碳循环和我们今天要讲的磷循环。

4·Phosphorus is an important biogenic element and phosphine has been confirmed to be widespread in the environment. The discovery of phosphine let people rediscover the phosphorus cycle.

磷是环境中一种重要的生源要素，自然环境中磷化氢的存在已经得到了证实，磷化氢的发现使人们重新认识并试图补充磷循环。

5·Then over many more years, the Phosphorus-rich rocks of the new land begin to erode and the cycle continues.

然后过了许多年，含磷丰富的新陆地岩石开始被侵蚀，而且循环还在继续。

6·The phosphorus at the bottom of the ocean has to somehow make its way back to the surface, to complete the cycle, to begin the cycle all over again.

海底的磷必须找到某种方式回到表面，以完成这个循环，从而重新开始这个循环。

7·Owing to the exploitation of phosphorite and phosphorus's unilateral cycle in nature, phosphorus resource is increasingly exhausted.

由于磷矿的开采和磷在自然界中近乎单向循环，磷资源日益枯竭。

8·The slip viscosity can be reduced, the slip exhausting speed of bodies can be increased, and their drying cycle can be shortened, adding the sodium polyphosphate and phosphorus components.

添加多磷酸钠和含磷成分可以降低泥浆的粘度，提高坯体的排浆速度，缩短干燥时间。