为啥朗文和牛津上都查不到administrate这个词，啥意思啊，怎么用？

administrate: 管理,支配

1. that its duties are to perform routine defense service, administrate military facilities, handle relevant foreign-related military affairs, and ensure the security and stability of Hong Kong;
香港驻军的任务是，担负防卫勤务，管理军事设施，办理有关的涉外军事事宜，确保香港的安全稳定；

2. Also, local disabled persons' federations at the provincial (autonomous regional and municipal), prefecture and county levels have been established to serve the disabled, including disabled children in the region, and administrate their affairs.
在地方，建立了省（自治区、直辖市）、地、县残联，对本地包括残疾儿童在内的残疾人事业实施服务和管理。

administrator

管理、支配