他还和比尔盖茨、巴菲特一道，宣传陜西省的常春藤花园楼盘。
Obama then joined forces with Bill Gates and Warren Buffett to promote the Ivy Garden apartment block in Shaanxi.
在中国西南部四川省的山区，孩子们需要扶着藤梯爬过一段800米(半英里)的绝壁，才能到达学校。
In the mountains of southwest China's Sichuan province, children descend an 800-meter (half-mile) cliff on unsteady vine ladders to reach school.
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