There are two main causes of earthquakes.

地震由两种主要原因引起。

youdao

The causes of earthquakes are still hidden in obscurity.

地震的原因仍然隐蔽在蒙昧之中。

youdao

Based on the analysis of the causes of earthquakes, the method of using high-precision interferometer for crust deformation detection is promoted.

本文通过对地震成因的分析，提出了用高精度干涉仪进行大地监测的方法。

youdao

Fracking causes minor earthquakes (of the sort of size that happen naturally in the UK every few weeks anyway).

FORBES: Shale Fracking Causes Earthquakes

The foundations had little to do with earthquakes, and gave donations to causes that included the Sacramento Urban League, of which Mr Quackenbush is a director, and a football camp attended by his children.

ECONOMIST: Politics in California