Oneofthegrizzlybearsenjoyshimselfwithfoodathis20-year-oldbirthdaypartyattheBrookfieldZoo，westsuburbofChicago，theUnitedStates，onMarch21，2015.Thegrizzlybears，namedJimandAxhi，turn20onSaturdayandthezooofficialscelebratedtheir birthday with a special party. The bear brothers were born on the same day and made their way to the zoo in 1995 when they were orphaned in Alaska. They have lived in the Brookfield zoo ever since. [Photo: Xinhua]3月21日，在美国芝加哥布鲁克菲尔德动物园，一对灰熊兄弟中的一只在他的生日派对上享受美食。当日，这对灰熊兄弟迎来他们的20岁生日。公园管理方介绍，这对灰熊兄弟1995年出生于阿拉斯加，同年成为孤儿后被送到布鲁克菲尔德动物园，从此他们一直生活在这里。 [Photo: Xinhua] [Photo: Xinhua] [Photo: Xinhua] [Photo: Xinhua]