第三种类型的山可能是由于火山活动形成的，一般发生在活动性褶皱带地区，如北美西部的喀斯喀特山脉。
A third type of mountain may be formed as a result of volcanic activity which occurs in regions of active fold mountain belts, such as in the Cascade Range of western North America.
他们转向如电视、电脑、互联网、录像带、光盘和音频设备一类的电子媒体，按下按钮就可自娱自乐。
They turn to electronic media such as television, computers, the Internet, videos, CDs and audio equipment, which can provide them with instant self-entertainment at the push of a button.
其他气候友好的措施包括研究和报告、教育、以及在最易受影响的地区（如永久冻土带和有洪水风险的地区）做好应对准备。
Other climate-friendly steps include studies and reporting, education, and preparations for adaptation measures in the most vulnerable regions, for example, in permafrost and flood-risk areas.
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