Coal is always a main energy sources in our country, and exploitation of coal was threatened by many mine geological disasters, in which the water inrush from mine is the most primary problem.
煤炭一直是我国的主要能源，煤炭开采受到多种矿井地质灾害的威胁，其中最大安全问题是矿井突水事故。
The most primary problem is the ignorance of the behavioral factors in the process of design and construction, which led up to the scarcity of public activity and public space that have genius loci.
城市中公共空间的建设方兴未艾，但也表现出诸多问题，主要体现在设计与建设对于人的行为因素的忽视致使具有场所精神的公共活动与公共空间的缺失。
Scare water is not the primary problem, however. Hydro stations normally produce only about 22% of the nation's power. Most of the remainder-73%-comes from coal.
但这并不是主要问题。水电站的发电量一般只占到国家用电的22%，而剩下大约73%的电量均由煤炭发电站提供。
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