Dịch ra tiếng việt 1. Finally came up with a device which they first introduced in 1876. 2. This was the first telephone message. 3. Bell demonstrated

By Sadie

Dịch ra tiếng việt
1. Finally came up with a device which they first introduced in 1876.
2. This was the first telephone message.
3. Bell demonstrated his invention to the public at countless exhibitions , and by 1877 the first telephone was in commercial use.
4. He later emigrated , first to Canada and then to the USA in the 1870s.
5. Soon , Bell started experimenting with ways of transmitting speech over a long dostance. This led to the invention of the telephone.




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