名词
中文翻译：冷杉树同义词
同义词：
['Douglas pine', 'Douglas spruce']
例句：
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1. This area is home to many Douglas fir trees.
这个地区有许多冷杉树。
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2. The Douglas fir tree is known for its distinctive cones.
冷杉树以其独特的球果而闻名。
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3. The forest was once a thriving habitat for the Douglas fir.
这片森林曾是冷杉的繁荣栖息地。