Vietnamese Tutor



VI-EN VI-DE VI-ML 2000 3000 MCC 5000



assiduous eifrig ijverig assidu assiduo asiduo ขยัน chăm chỉ 勤奋
laboriously mühsam moeizaam laborieusement faticosamente laboriosamente ลำบาก chăm chỉ 费力地