6 - 6B 单元

A global positioning system (GPS) is a network of satellites that helps determine the location of a device on Earth. It works by using signals from these satellites to calculate the exact position of a GPS receiver, such as a smartphone or vehicle navigation system. GPS is commonly used for navigation, guiding users to their destinations, and providing real-time location data. It can also be used for tracking, measuring distance, and helping with time synchronization.

A channel refers to a service that broadcasts various programs, such as news, entertainment, sports, and movies, to an audience. Each channel has its own unique schedule and content, which can be accessed through cable, satellite, or digital platforms. Channels are identified by their specific frequency or number, and viewers can choose which one to watch based on the type of content they are interested in. These services are responsible for creating or airing a variety of shows to attract different viewers.

A battery is a device that stores energy and provides power to machines, devices, or vehicles. It works by converting stored chemical energy into electrical energy, which can be used to run various equipment. Batteries come in different sizes and power levels depending on their use, from small ones in electronic devices to large ones in cars. They are essential for powering things like phones, flashlights, and cars. Over time, batteries lose their ability to hold charge and need to be replaced or recharged.

A television show is a program broadcast on television, typically featuring a series of episodes. These shows can cover various genres, such as drama, comedy, news, or reality, and are designed to entertain, inform, or educate audiences. television shows can be produced in different formats, including scripted narratives, unscripted competitions, or talk shows. They are usually released on a regular schedule, such as weekly, and may run for a single season or multiple seasons, depending on their popularity and audience interest.