美国图片:U.S. First Lady Michelle Obama, left, and her mother Marian Robinson, right, feed an apple to giant pandas during their visit at Giant Panda Research Base in Chengdu, Sichuan province, China. 美国第一夫人米歇尔·奥巴马和她母亲在成都大熊猫繁育研究基地给大熊猫喂苹果。
