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for subject
Scuba diving
containing
第
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Chinese
English
不均衡式单瓶
第
一级
减压装置
unbalanced single-hose first stage
调节器的
均衡式
第
一级
balanced first stage
减压停留的
第
一停留点
first stop
第
一次试跳
first attempt
第
二次试跳
second attempt
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