《山谷崛起：探索自然力量与人类智慧的交融之旅》家教高级课程在线观看

　　In the shady campgrounds of Yosemite valley, climbers carved out a counterculture lifestyle of dumpster-diving and wild parties that clashed with the conservative values of the National Park Service. And up on the walls, generation after generation has pushed the limits of climbing, vying amongst each other for supremacy on Yosemite's cliffs. "Valley Uprising" is the riveting, ... (展开全部)