他在一家国立医院工作。

He works at a state-run hospital.

周三下午，前任美国总统巴拉克奥巴马去了位于华盛顿特区西北方位的儿童国立医院。他戴着圣诞老人的帽子，给年轻的病人发放礼物。

Former President Barack Obama spent Wednesday afternoon visiting the Children's National Hospital in northwest Washington, D.C. where he delivered presents to young patients while wearing a Santa hat.