The real danger would come from an object more than a kilometer in diameter, which could kick up enough sediment to cause environmental damage and crop failures worldwide.

真正的危险来自于直径超过1公里的天体，它会造成大量的沉积物，来破坏环境以及导致全球粮食歉收。

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If the object is vertical and smooth, and there is danger of the rope slipping, take an extra wrap around the object.

如果该物体是垂直且光滑的，有缰绳滑落的危险，就加用绳来包裹住物体。

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The real danger would come from an object more than a kilometer in diameter, which could kick up enough sediment5 to cause environmental damage and crop failures worldwide.

真正的危险来自直径超过一公里的天体，这种天体所激起的沉淀物足以导致世界范围内的环境破坏，农作物歉收。

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