The soft ground may have absorbed some of the impact.

松软的地面可能减轻了一部分冲击力。

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This increases their air-resistance and reduces the shock of impact when they hit the ground.

这样就加大了空气阻力，并减少了它们着地时冲击力带来的震动。

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Impact with ground: 52.5 seconds.

与地面的影响：五十二点五秒。

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Impact with ground: 52.5 seconds.

与地面的影响：五十二点五秒。

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