形容词
中文翻译：至关重要的
同义词：
['essential', 'vital', 'vitalistic']
例句：
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1. The health of the population is vital to the country's economy.
人口健康对国家经济至关重要。
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2. Vital statistics are used to monitor the health of a population.
关键统计数据用于监测人口健康状况。
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3. Vital signs were monitored during the surgery.
手术期间监测了生命体征。