geologist|geologists

这位地质学家正在评估这片区域的地震风险。

The ___geologist is assessing the earthquake risks in this area.

地质学家正在研究这些岩石的年龄。

The ___geologists are studying the age of these rocks.

这位地质学家正在研究火山岩石样本。

The ___geologist is studying samples of volcanic rocks.