形容词中文翻译
中文翻译：必需的
同义词：
['vital', 'essential', 'fundamental']
例句：
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1.The essential ingredient in this recipe is salt.
这个食谱中必不可少的成分是盐。
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2. The essential difference between the two cultures is their approach to life.
两种文化之间最根本的区别是他们对生活的态度。
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3. The essential function of the lungs is to transport oxygen from the atmosphere to the bloodstream.
肺的基本功能是将氧气从大气输送到血液循环系统中。