infinity pool
noun [ C ] uk/ɪnˈfɪn.ə.ti ˌpuːl/ us/ɪnˈfɪn.ə.t̬i ˌpuːl/
（水面和游泳池的边沿一样高的）无边际游泳池
a swimming pool in which the top of the water is at the same level as the edges surrounding the pool, and seems, to someone in the pool, to stretch to the horizon (= the point where the land appears to join the sky)
The hotel has an infinity pool that overlooks the ocean. 旅馆有一座俯瞰大洋的无边际游泳池。