The University of Maryland is now working with three organ procurement organizations across the country to slowly begin implementing drone use.

马里兰大学目前正在与全国的三个器官采植组织合作，慢慢开始实施无人机的使用。

There are 58 O.P.O.s in the United States — organ procurement organizations.

美国有 58 个 O.P.O.——器官获取组织。