名词
中文翻译：Unknown
同义词：
['spruces', 'spruce']
例句：
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1. The spruce tree is a popular ornamental plant in the northeastern United States.
松树是美国东北部流行的观赏植物。
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2. The spruce bark is used in making paper products.
松木皮用于制作纸制品。
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3. The spruce forest is home to many rare and endangered species.
松林是许多稀有和濒危物种的家园。