Our country is a seismic country where earthquake frequently happens and where seismic area is widely distributed.

我国是一个多地震国家，地震区分布范围广，发震频繁。

youdao

The problem with quakes in the central or eastern us is two-fold: Seismic waves travel farther in the colder, older crust under that part of the country, so the damage can be more widespread.

美国中部及东部的遇到的有关地震的问题是双重的：地震波在这部分古老而寒冷的地面上传播的较快，所以危害传播得更广。

youdao

The area known for the greatest seismic activity in Canada is in the far western portion of the country-the coast of British Columbia.

加拿大最著名的地震高发带位于偏远的西部地区，即不列颠哥伦比亚省的海岸线附近。

youdao

There are more than four thousand seismic intensity meters in place across the country to measure earthquakes.

VOA: special.2011.06.07

And the former Defense Nuclear Agency (now called the Defense Special Weapons Agency) has reported that there are several techniques that could be employed to reduce the likelihood that covert nuclear tests will be reliably identified even by in-country seismic monitoring.

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Japan may be better prepared for earthquakes and tsunamis than any other country, with stringent building codes and widespread use of advanced seismic dampening technology, as The New York Times describes, a population well-drilled on how to respond to disasters and a first-rate public health system.

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Seismic activity triggered by the test at the Punggye-ri site in the north-east of the country was detected by several nations.

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