Cold work: 'Buddy teams' dig out huge chunks of ice using a hand-powered drill to create dive holes in the White Sea, Russia.

钻冰洞：俄罗斯白海，“巴迪队”用手动钻挖出大块的冰，钻出潜水洞。

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Avoid endurance dives. If you must make a long or deep dive, make sure you have a buddy standing by on the surface.

避免光靠忍耐力的潜水。如果你一定要开始一次很久很深的潜水，请确定你有一个潜伴在水面上看着。

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