名词
中文翻译：树皮层
同义词：
['bark layer', 'bark cover', "bark overlay例句：1. The tree's bark mantle is thick and rough.（这棵树的树皮层又厚又粗糙。）"]
例句：
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1. The tree's bark mantle is thick and rough.
这棵树的树皮层又厚又粗糙。
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2.The scientist used a microscope to examine the bark mantle.
科学家用显微镜检查树皮层。
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3.The bark mantle is an important part of the tree's structure.
树皮层是树结构的重要部分。