如今，越来越多的电子产品打着便携的招牌走入了我们的生活，便携化不仅是年轻人无拘无束的象征，也是一种极简生活理念的体现。

今天要和大家分享一款便携音箱——TaoTronics的防水蓝牙音箱，由于其功能性较强，适用于更多场景，比较适合对音质要求不挑剔但爱护听力的消费群体。

Satellite navigation has revolutionized the way we get around. It’s cheap, fast and easy to use. But there’s one fatal flaw in the system: It simply can’t work underground.

GPS requires line of sight to satellites orbiting the planet. The great advantage of this is that it works seamlessly all over the world, without needing to be connected to a cellular or Wi-Fi network. This works well in open areas but in built-up areas with tall buildings, or in underground tunnels, the system can fall apart.