When you have tanks of air on your back you can stay in deep water for a long time 该文章转载自出国

问题描述:

When you have tanks of air on your back you can stay in deep water for a long time 该文章转载自出国

同意1楼

当你背上背有氧气罐的时候,你就可以在深水处呆较长时间
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