但由于许多地震发生在偏远地区抑或地震级数很小，他们就未报道。

However, many go undetected because they hit remote areas or have very small magnitudes.

youdao

但由于许多地震发生在偏远地区抑或地震级数很小，他们就未报道。

However, many go undetected because they hit remote areas or have very small magnitudes.

youdao