名词
中文翻译：必要性
同义词：
['importance', 'necessity', 'need', 'urgency例句：1. The lack of water is a serious necessity for survival.（缺水是生存的严重需要。）2. He has to make the decision based on his own necessities.（他必须根据自己的需要做出决定。）']
例句：
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1. The lack of water is a serious necessity for survival.
缺水是生存的严重需要。
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2. He has to make the decision based on his own necessities.
他必须根据自己的需要做出决定。
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3. The company's financial crisis was a great necessity for their survival.
公司的金融危机对他们的生存构成了巨大的需要。