高度依赖稳定运行的通信网络、精准定位的卫星系统以及安全畅通的城市道路，其技术的迭代与日常运营，与公共基础设施的变化深度绑定。
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What’s even more convenient is that they offer a variety of sleep-focused features to help you rest better. For example, you can use them to play a range of relaxing sounds, from meditation exercises and nature clips to white noise. You can use them as a regular pair of Bluetooth earbuds, too, just in case you prefer to listen to audiobooks or your own curated sleep playlist. They even come with adjustable EQ as well, though we wouldn’t recommend using them as your primary earbuds for music, given that they can’t match the audio quality you’d get from a pair of midrange earbuds from Apple, Sony, or Bose.
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图：安进历史销售一览，来源：锦缎研究院