1. learn more long time -> learn more for a longer time // ÀÚµ¿»ç·Î´Â ¸ø¾²³ª¿ä?
2. the past when was based on~ -> the past when it was based on // ³»ÀÏ Áú¹® ²À it ÀÖ¾î¾ß?
3. graduated university -> graduated from ~
4. to success -> to be successful // ³»ÀÏ Áú¹®.
5. modern people -> modern-day people
6. learn high tech devices -> learn how to use ~