名词
中文翻译：中轴
同义词：
['midsection', 'middle part例句：1. The engineer measured the mid-shaft of the tree to ensure it was healthy.（工程师测量了树的中轴以确保它健康。）']
例句：
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1. The engineer measured the mid-shaft of the tree to ensure it was healthy.
工程师测量了树的中轴以确保它健康。
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2. The carpenter cut the mid-shaft of the table to make it stronger.
木匠将桌子的中轴切断以使其更坚固。
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3. The scientist studied the mid-shaft of the plant to understand its growth patterns.
科学家研究了植物的中轴以了解其生长模式。