名词
中文翻译：坚硬的木材
同义词：
['hard wood', 'tough fruit']
例句：
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1. The tree produces hard wood that is used for building houses.
这棵树产出的硬木用于建造房屋。
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2. The hard wood is resistant to decay and can last for centuries.
这种硬木耐腐且可保存数百年。
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3. The hard wood is also used in making furniture and tools.
这种硬木也用于制作家具和工具。