exchange of substance

• 物质交换

exchange of substance的用法和样例：

例句

1. The sertoli cell is the central point of exchange information and material.
   支持细胞在生精细胞发育中，处于信息和物质交换的中心地位。
2. The gold deposits in this area have been believed to be the products of crust-mantle exchange and resulted from multistage gold mineralization.
   该地区的金矿被认为是壳幔物质交换的产物，并且是多阶段金矿化的结果。