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This pull request includes a bug fix, an enhancement on fetching pronunciations, and a lot of refactoring. I wish there were some unit tests to ensure the inexistence of any loss in program behavior and reliability. However, whatever I manually tested performed well and improved. Do any refinements in case you found a better organization, more clear structure, improved messages shown to the user, or more meaningful names for variables or functions. I wish I could break the last commit containing a big refactoring into lots of smaller ones, yet the final design was not clear at the beginning and I did lots of editing to come into this committed version. It has taken lots of time from me so far, so I desire it makes us both delighted.