sub-aqua

adjective
🔊/ˌsʌb ˈækwə/
🔊/ˌsʌb ˈɑːkwə/
[only before noun] (British English)
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  1. connected with sports that are done underwater水下运动的
    • sub-aqua diving潜水
    • sub-aqua equipment潜水设备
    Oxford Collocations DictionarySub-aqua is used with these nouns:
    • diving
    See full entry
    Word Origin1950s: from sub- ‘under’ + Latin aqua ‘water’.