harmonious
adjective uk/hɑːˈməʊ.ni.əs/ us/hɑːrˈmoʊ.ni.əs/
(MUSIC)
悦耳的,和谐的
having a pleasant tune or harmony
(PLEASANT)
和睦的;协调的
friendly and peaceful
harmonious relations between the country's ethnic groups 国家内部不同民族间的和谐关系