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Jyutping mat6 bai3 sik1 ceon4 waan4 zoi3 fu1 kap1 seoi2 fai3 hai6 tung2
Pinyin mì bì shì xún huán zài hū xī shuǐ fèi xì tǒng

Definitions (CC-CEDICT)
  1. closed-circuit rebreather scuba (diving)