为什么这只熊猫宝宝看起来这么高兴？(Why does this panda cub look so happy?)

这只大熊猫幼崽似乎在向中国四川碧峰峡熊猫基地打招呼。今天，估计有1900只大熊猫生活在中国中部山区的野外，另外还有400只被圈养的大熊猫。竹子占熊猫饮食的99%，它每天必须吃30磅以上的木本草才能满足它的饮食需求，并保持它可爱的腰围。雄性大熊猫体重超过300磅，雌性大熊猫比雄性小10-20%。这种对竹子的依赖给大熊猫带来了一个困境，因为人类的发展不断侵蚀大熊猫自然栖息地的竹林。因此，重要的是要传播对这个标志性的和可爱的物种的认识。
原文：
This giant panda cub appears to be waving hello from the Bifengxia Panda Base, a research and breeding facility in Sichuan, China. Today, there's an estimated 1,900 pandas left in the wild, living in the mountainous regions of central China, plus another 400 pandas in captivity. Bamboo makes up 99 percent of a panda's diet, and it must eat upward of 30 pounds of the woody grass each day to meet its dietary needs and maintain its cuddly girth. Male giant pandas can register over 300 pounds on the scale; females tend to be 10-20% smaller than males. This bamboo dependence presents the giant panda with a predicament since human development continues to encroach on the bamboo forests of pandas' natural habitat. It is therefore important to spread awareness about this iconic and loveable species.
《© Suzi Eszterhas/Minden Pictures》