Ask about learning a new language using screen reader.


Dear Listers, 
For now, NVDA is the only one screen reader that I use. I'd like to learn a new language which will be start next year. I have questions, but first of all, here are my plans and / or conditions. 
- I don't have braille display, so I can only learn by listening any materials and reading anything using screen reader. 
- I'm using NVDA with Windows 7. 
- For now, I'm deciding to choose between Chinese and Arabic. 
Here are my questions: 
- What are the best synthesizers for both languages, it can be paid or free synthesizer that can use with NVDA. 
- Is it hard to learn typing in both languages? I mean, keyboard layout, special symbol etc.
- Any suggestions about learning both languages are welcome. 
Thank you.

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