Oceanic means “to do with the ocean” — the great salt water that covers most of the Earth.

Oceanic海洋的 means "to do with the ocean"意思是「跟海洋有關的」 the great salt water that covers most of the Earth也就是覆蓋地球大部分表面的那片大鹹水。

Scientists like this word: oceanic water, an oceanic current, oceanic crust (the rock under the deep sea, which is not the same as the rock under the land), an oceanic climate (weather shaped by the sea). It is a bit more formal than just using ocean as a describing word, as in ocean water or ocean fish. Though actually, those everyday ocean + noun pairs are often the more natural choice in speech; oceanic sounds like a textbook or a science report.

Scientists like this word科學家喜歡用這個詞 oceanic water, an oceanic current, oceanic crustoceanic water（海洋水）、an oceanic current（洋流）、oceanic crust（海洋地殼） (the rock under the deep sea, which is not the same as the rock under the land)（深海底下的岩石，跟陸地底下的岩石不一樣） an oceanic climate還有an oceanic climate（海洋性氣候） (weather shaped by the sea)（受海洋影響的天氣）。It is a bit more formal than just using ocean as a describing word這個詞比直接把ocean當形容詞用要正式一點 as in ocean water or ocean fish像ocean water（海水）或ocean fish（海魚）那樣。Though actually不過其實 those everyday ocean + noun pairs are often the more natural choice in speech日常說話裡ocean加名詞的組合往往才是比較自然的選擇 oceanic sounds like a textbook or a science reportoceanic聽起來比較像教科書或科學報告。

People sometimes stretch it for things that feel as wide or as deep as the sea.

People sometimes stretch it人們有時候會把這個詞延伸使用 for things that feel as wide or as deep as the sea用在感覺跟海一樣廣、一樣深的事物上。

There is also a special use in language study: Oceanic languages are a family of languages spoken on many Pacific islands. That still ties back to the ocean those islands sit in.

There is also a special use in language study在語言研究裡還有一個特別的用法 Oceanic languages are a family of languages spoken on many Pacific islandsOceanic languages（大洋語族）指的是太平洋許多島嶼上使用的一群語言。That still ties back to the ocean those islands sit in這還是跟這些島嶼所在的海洋有關。