名词
中文翻译：关键
同义词：
['pivot', 'keystone例句：1. The key to solving this problem lies in the data analysis.（解决这个难题的关键在于数据分析。）2. He kept the key to the safe hidden in his pocket.（他把保险箱的钥匙藏在了口袋里。）']
例句：
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1. The key to solving this problem lies in the data analysis.
解决这个难题的关键在于数据分析。
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2. He kept the key to the safe hidden in his pocket.
他把保险箱的钥匙藏在了口袋里。
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3. The key to success is hard work and dedication.
成功的关键在于努力工作和奉献。