形容词
中文翻译：必要的
同义词：
['crucial', 'vital', 'fundamental']
例句：
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1.The essential steps in the process are crucial for success.
过程中的基本步骤对于成功至关重要。
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2. The company's survival depends on its ability to adapt to changing market conditions.
公司的存续取决于其适应市场变化的能力。
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3. The importance of education cannot be overstated; it isessential for personal and societal development.
教育的重要性不容忽视，它是个人和社会发展的必需品。