As the demand for these personal navigation devices continues to grow, so does the need for better quality images covering more parts of the world.
这对这些个人导航设备需求的持续增加，对覆盖全球更多地区的高品质图像的需求也在日益增加。
These tools include both built-in systems and Personal Navigation devices (PNDs), which are handheld devices that users can carry with them and use in their vehicles.
这些工具包含内置系统和个人导航设备(PND)，这两个设备都是手持设备，使用者可以随身携带，并能在车内使用。
These tools include both built-in systems and Personal Navigation devices (PNDs), which are handheld devices that users can carry with them and use in their vehicles.
这些工具包含内置系统和个人导航设备(PND)，这两个设备都是手持设备，使用者可以随身携带，并能在车内使用。
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