6. Diving Deep 潜入深水:

282 feet has been achieved by the best free diver. An ordinary person is most likely to black out below 60 feet and before 2 minutes without equipment.

最好的自由的跳水运动员已经能达到282英尺。一个普通人在没有任何装备辅助的情况下最多可以到达60英尺，耐久2分钟。

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