geochemistry of rare elements

例句：

1. 1.Geochemistry is the study of the chemical composition of rocks and minerals on Earth's surface.
   地球化学是研究地球上岩石和矿物的化学成分。
2. 2. The geochemist analyzes soil samples to determine their mineral content.
   地球化学家分析土壤样本以确定其矿物质含量。
3. 3. Geothermal energy is a form of renewable energy that comes from the heat in the Earth's crust.
   地热能是一种来自地球地壳热量的可再生能源形式。