名词
中文翻译：炉底
同义词：
['bottom of a furnace', 'furnace floor例句：1. The furnace bottom is where the heat comes from.（炉底是热量的来源。）']
例句：
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1. The furnace bottom is where the heat comes from.
炉底是热量的来源。
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2.The furnace bottom was covered in soot.
炉底被煤灰覆盖。
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3.The furnace bottom is where the hot gases come out.
炉底是热气体出来的位置。