semisubmersible platform
/sˌaɪzməɡɹˈafɪk ɹɪkˈɔːdɪŋ/
n
English · semisubmersible platform中文 · 半潜式平台Español · plataforma petrolera semisumergidaFrançais · plate-forme semi-submersible
意味：Movable structure that is anchored to the seabed and used at depths of 100 to 500 m; it is mounted on pontoons submerged at about 30 m to provide stability. production platform