| stands for takes time as well in time in the way |
If you look at the top of your phone, you will usually see a title symbol that says 3G or 4G. The "G" the generation （代） of your mobile network. But these symbols will become things of the past after 5G networks fully arrive.
About 100 times faster than 4G networks, 5G will let people download and upload data （数据） faster than ever before. People can use it for many other things.
For example, 5G will help to make self-driving cars safer. today's self-driving test cars have one problem—lag （延迟）.When the car "sees" something , it sends this information to the data center and receives instructions.
However, it to send and receive this information. With this kind of lag, the care may crash because they don't receive instructions . With 5G, this lag will be greatly lowered, making the cars safer.
