名词
中文翻译：需要火源
同义词：
['necessity', 'necessity', 'requirement', 'need']
例句：
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1. Without a fire, we can't cook dinner.
没有火，我们无法做饭。
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2. The firefighters were called to put out the blaze.
消防员被召来扑灭大火。
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3. He needs firewood for his wood-burning stove.
他需要木柴来烧他的木炉。