syndesmography

例句：

1. 1.The study of the isotopes in rocks is crucial for understanding their formation processes.
   研究岩石中的同位素对于理解其形成过程至关重要。
2. 2. The research team used isotopes to trace the movement of water across the land.
   研究小组使用同位素追踪了水在陆地上的流动。
3. 3.The discovery of new isotopes has opened up new avenues for studying the Earth's history.
   新同位素的发现为研究地球历史开辟了新途径。