Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4) Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4) Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4) Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4) Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4) Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4) Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4) Analysis of the pronunciation of difficult characters in the lower five languages (examination units 1-4)
