段落翻譯 3-6 (p.59)

Because most soils contain little phosphate,it is often the limiting factor for plant growth on land unless phosphorus (as phosphate salts mined from the earth) is applied to the soil as a fertilizer. Phosphorus also limits the growth of producer populations in many freshwater streams and lakes because phosphate salts are only slightly soluble in water.

因為多數土壤包含少許的磷酸鹽，它經常是植物在土地生長的限制因素，除此之外，磷〈從地球開採的磷酸鹽〉還被應用於土壤作為肥料。因為磷酸鹽是少許在水中可溶解的，磷在許多淡水小河和湖也限制生產者的族群成長。