名词
中文翻译：清洁的树干
同义词：
['clean trunk', 'clean stump']
例句：
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1.The tree's clean bole is a symbol of its resilience.
这棵树干净的树干是它坚韧的象征。
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2.The old tree was cut down and the clean bole was used for firewood.
那棵老树被砍倒了，干净的树干被用来做柴火。
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3. The forest ranger cleaned the bole of the fallen tree to prevent it from becoming a hazard.
森林管理员清理了倒下的树木的干净树干，以防止它成为危险。