excretory organ

1.The development of the kidney, the major excretory organ after birth, consists of 3 stages: the pronephros, mesonephros and metanephros.

人体主要的排泄器官，它的发育经过原、中、后3个阶段。

2.Fluoride is a widely distributed nephrotoxin with exposure potentially resulting from environmental fluorine excess.Kidney is the main excretory organ of fluorine.

氟的主要排泄器官，当机体摄入过量氟超过的排泄能力时，胞就会因处于高氟环境而受到损害。