单词	hydronaut
释义	hydronaut noun hy·​dro·​naut ˈhīdrəˌnȯt, -nät plural -s : a member of the crew of a deep-sea vehicle (such as a bathyscaphe) other than a submarine Word History Etymology hydr- + -naut (as in astronaut)
随便看	littler littles littlest Littleton littling littlings littlish littoral littoral current littorals Littorina littorinae littorinas Littorinidae littorinidaes littorinidian littorinoid Littrow spectrograph Littré littérateur litu lituate lituite Lituites lituitoid

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