seismic catastrophes的用法和样例：
例句
- Sitting on the circum-Pacific Ocean seismic belt,Hebei Province is one of the most earthquake disaster-prone prov inces in our country.
河北省位于环太平洋地震带，是我国地震灾害多发，灾害死伤人数最多，损失最重的省份。 - Based on summmarising the urban characters of the seismic, the methods of vulnerability are analyzed and compared, and some further studies are suggested.
本文通过总结城市地震灾害特点，分析比较现有承载体易损性方法，指出需要进一步研究的内容。
