Từ điển trực tuyến - Online Dictionary

Random quote: Reviewing what you have learned and learning anew, you are fit to be a teacher.: Confucius

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Updated: 14/03/2018: A new open-source Javascript engine/library named Howler has been employed to handle audiofile. Enjoy pronunciation!

Optional: 01/2018:Picture Dictionary

Updated: 05/06/2018:List of Academic Words

Updated: 03/2019: Learning by reading annotated text, reliable state of art and updated news