名词
中文翻译：空心轴
同义词：
['hollow pole', 'hollow tube例句：1. The hollow shaft of the drill is filled with sand to prevent it from spinning too quickly.（钻头中的空心轴里填满了沙子，以防它旋转得太快。）2. The hollow shaft of the tree was used as a makeshift ladder for climbing up to the branches.（这棵树的空心部分被用作临时的梯子，用来爬到树枝上。）']
例句：
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1. The hollow shaft of the drill is filled with sand to prevent it from spinning too quickly.
钻头中的空心轴里填满了沙子，以防它旋转得太快。
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2. The hollow shaft of the tree was used as a makeshift ladder for climbing up to the branches.
这棵树的空心部分被用作临时的梯子，用来爬到树枝上。
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3. The hollow shaft of the machine was filled with water to cool down the engine.
机器的空心轴里灌满了水，用来冷却发动机。