请简述人工智能的定义及其重要性，以json格式输出并对答案进行英文翻译。
user
{
  "definition": "人工智能是指通过计算机系统模拟人类智能的技术和应用。",
  "importance": "人工智能的重要性和影响体现在多个方面，包括提高效率、自动化日常任务、优化决策过程、推动科学研究和创新，以及在医疗、金融、交通等多个领域带来革命性变化。",
  "english_translation": {
    "definition": "Artificial intelligence refers to the technologies and applications of simulating human intelligence through computer systems.",
    "importance": "The importance and impact of artificial intelligence are manifested in various aspects, including improving efficiency, automating routine tasks, optimizing decision-making processes, driving scientific research and innovation, and bringing revolutionary changes in various fields such as healthcare, finance, and transportation."
  }
}
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