词汇讲解：
1. seismic adj. 地震的
例句：Japan and the United States have invested in computer technology to monitor and analyze seismic activity .
日本和美国已经投入资金运用电脑技术来观测和分析地震活动。
2. magnitude n. 震级例句：Thousands were left homeless when an earthquake with a magnitude of 6.3 shook central Italy early Monday morning .
星期一早晨意大利中部发生地震，震级为6.3，数千计的人无家可归。
3. cancel vt. 取消例句：We cancelled our appointment.
我们取消了约会。
4. devastating adj. 毁灭性的例句：It is the most devastating storm in 20 years.
这是20年来破坏性最大的风暴。
5. litter v. 使杂乱，使凌乱例句：The students littered their classroom.
学生们在教室乱扔东西。
6. desperate adj. 不顾一切的，拼命的例句：He is a desperate criminal.
他是个亡命之徒。
7. salvage vt. (从火灾、海难等中)抢救(某物)例句：All attempts to salvage the wrecked ship failed.
抢救失事船只的一切努力都失败了。
8. faith n. 信任，信心例句：I have lost faith in him and have come to mistrust him.
我对他已经失去了信任，已经不信任他了。
9. decimate vt. 大量毁灭例句：The population was decimated by a plague.
人口中的大部分被一场瘟疫所毁。
10. deserted adj. 无人居住的，荒芜的，被废弃的例句：The children came to a deserted castle and began with their mysterious expedition.
孩子们来到这个荒无人烟的城堡,开始了他们神秘的探险活动。
11. intact adj. 未受损的，完整无缺的例句：The packages are intact.
包装完好无损。
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