The sparse seismic instrumentation in those areas doesn't allow us to actually record all the smaller earthquakes.

由于那些地方的地震监测仪器很少，因此实际上我们无法测得所有的小地震。

youdao

The sparse seismic instrumentation in those areas doesn't allow us to actually record all the smaller earthquakes.

由于那些地方的地震监测仪器很少，因此实际上我们无法测得所有的小地震。

youdao