名词
中文翻译：树皮
同义词：
['bark', "sapwood例句：1. The tree's paperbark is peeling offin patches.（这棵树的树皮正在一块块脱落。）2. The old tree had athick paperbark that was difficult toremove.（那棵老树有一层厚厚的树皮，很难剥掉。）"]
例句：
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1. The tree's paperbark is peeling offin patches.
这棵树的树皮正在一块块脱落。
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2. The old tree had athick paperbark that was difficult toremove.
那棵老树有一层厚厚的树皮，很难剥掉。
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3. The barkof the oak tree is very hardand can be used for making paper.
橡树的树皮非常硬，可以用来造纸。