他在大学里学习地球科学，研究地震和火山活动。

He studies ___geoscience at university, focusing on earthquakes and volcanic activities.

她在大学主修地球科学，专注于研究气候变化。

She majors in ___geoscience at university, focusing on climate change research.

地质科学在预测自然灾害方面发挥着重要作用。

___Geoscience plays a vital role in predicting natural disasters.