装卸搬运也应该防止损伤产品表面。

Handle so as to prevent damage to finished surfaces.

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禁止粗暴或漫不经心地操作钢瓶，以防止损伤钢瓶或填充物。

Do not handle cylinders roughly or carelessly to prevent damage to the cylinder or the filler.

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骨骼密度的增加，意味着骨骼的强度加大，对防止损伤、疼痛以及关节炎极有益处。

The increase of bone density refers to the strengthening of the bones which helps prevent injury, pain, and arthritis.

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