Bottom time
01
底部时间, 潜水时长
the duration a diver spends underwater during a single dive, typically measured from descent to ascent
例子
His bottom time on that dive was 30 minutes.
他那次潜水的底部时间是30分钟。
We aimed for a maximum bottom time of 45 minutes.
我们的目标是最大底部时间为45分钟。



























