名词
中文翻译：盾的躯干同义词
同义词：
['trunk', 'backbone', 'spine']
例句：
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1. The trunk of the tree is thick and sturdy.
这棵树的树干又厚又结实。
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2. The backbone of the country's economy is its manufacturing sector.
该国经济的脊梁是其制造业部门。
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3. The spine of the book is a detailed map of the region.
这本书的脊梁是该地区的详细地图。