名词
中文翻译：通用型炉子黑
同义词：
['general-purpose furnace', 'general-purpose furnace black']
例句：
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1. This furnace is designed for general-purpose use.
这台炉子是为通用用途设计的。
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2. The black powder was used to make the furnace black.
用黑火药来给炉子上色。
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3. The blacksmith's tools are always kept in a special cabinet.
铁匠的工具总是放在一个特殊的柜子里。