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 __   _    _    _    __   __     ___      _____   
| || | || | || | ||  \ \\/ //   / _ \\   / ____|| 
| '--' || | || | ||   \   //   / //\ \\ / //---`' 
| .--. || | \\_/ ||   / . \\  |  ___  ||\ \\___   
|_|| |_||  \____//   /_//\_\\ |_||  |_|| \_____|| 
`-`  `-`    `---`    `-`  --` `-`   `-`   `----`

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發送短信 : Possible solutions to the problems commonly encountered by students at Hanoi University of Technology in pronouncing the English affricative consonants