名词
中文翻译：棕色的树皮
同义词：
['brown bark', 'brown wood']
例句：
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1.The old tree had a thick layer of brown bast on its trunk.
这棵老树的树干上覆盖着厚厚的棕色树皮。
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2. The farmer used the brown bast from the oak tree to make furniture.
农民用橡树的棕色树皮制作家具。
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3. The brown bast was so thick that it protected the tree from the cold winter winds.
棕色的树皮非常厚实，能够保护树木免受寒冷冬风的侵袭。