名词
中文翻译：关键
同义词：
['critical', 'vital', 'essential例句：1. The key to solving the problem lies in finding the right solution.（解决问题的关键在于找到正确的解决方案。）']
例句：
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1. The key to solving the problem lies in finding the right solution.
解决问题的关键在于找到正确的解决方案。
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2. This key will unlock the door.
这个钥匙可以打开门。
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3.He was the key to success in his field.
他是他领域的成功的关键。