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	extinction coefficient extinction meter extinctions extinctive extincts extine extines extinguish extinguishable extinguishant extinguishants extinguished cetrarias cetraric acid cetrimides cette Cetus cetyl alcohol ceu CEU Ceuta Ceutorhynchus ceux king of arms Ceva's theorem cevadillas

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