海かい中ちゅう展てん望ぼう台だいMeaningsNoun1. undersea observatoryKanji used海sea中in展exhibit望hope台pedestalComposed of海かい中ちゅうin the seaNoun展てん望ぼうview; outlook; prospectNoun台だいstand; rest; base; pedestal; platform; table; holder; support; rack; setting (of a gem); …Noun