“大庆不是旅游资源型城市，更别提冬季旅游。”大庆市文化广电和旅游局副局长高岩直言不讳。
When EiE_iEi occurs, all the points are packed into a 180° arc starting at point iii. The remaining arc (the gap going counterclockwise back to iii) is at least 180°. Now suppose some other point jjj also tried to be an anchor. Point jjj's clockwise semicircle is exactly 180°. But to contain all the points, it would need to bridge that gap of 180° or more while simultaneously containing point iii on the other side. A 180° arc cannot straddle a 180° gap. So EjE_jEj cannot hold.
。关于这个话题，体育直播提供了深入分析
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Белый дом назвал причину решения Трампа ударить по Ирану02:40