a natural phenomenon involving the structure or composition of the earth
双语例句
The earthquake is one of the most impressive geological phenomena. 地震是一种最令人印象深刻的地质现象。
Varying from brown to red, from ochre to pink and purple, these polychrome dunes are the results of a rare geological phenomenon. 园内土壤从棕色到红色再从赭色到紫色，这个多彩的土丘产是一种罕见地质现象。
