诚心诚意: earnestly and sincerely (idiom); with all sincerity...
纪念日: day of commemoration, memorial day...
诊断: diagnosis, to diagnose...
罪魁祸首: criminal ringleader, main offender (idiom); main culprit, main cause of a disaster...
划船: to row a boat, rowing boat, rowing (sport)...
追悼: to mourn, to pay last respects, mourning, memorial (service etc)...
补课: to make up missed lesson, to reschedule a class...
安置: to find a place for, to help settle down, to arrange for, to get into bed, placement...
心得: what one has learned (through experience, reading etc), knowledge, insight, understanding, tips...
凳子: stool, small seat...
