Did you mean: sub scab shufa shaba shiba shubai shubao shubi ?
| 水肺 | shuǐ fèi | scuba |
| 二级头呼吸器 | èr jí tóu hū xī qì | (scuba diving) regulator; demand valve |
| 备用二级头呼吸器 | bèi yòng èr jí tóu hū xī qì | (scuba diving) backup regulator; octopus |
| 密闭式循环再呼吸水肺系统 | mì bì shì xún huán zài hū xī shuǐ fèi xì tǒng | closed-circuit rebreather scuba (diving) |