If two or more things harmonize with each other, they fit in well with each other.
例句
...slabs of pink and beige stone that harmonize with the carpet...與地毯協調搭配的粉色和米色相間的石板Barbara White and her mother like to listen to music together, though their tastes don't harmonize.盡管芭芭拉·懷特和她的母親音樂品味不太一致，她們還是喜歡一起聽音樂。
VERB
使（法律、制度或規則）協調;使統一
When governments or organizations harmonize laws, systems, or regulations, they agree in a friendly way to make them the same or similar.
例句
How far will members have progressed towards harmonising their economies?各成員國在使彼此經濟協調一致的進程上會有多大進展？
VERB
用和聲唱（或演奏）;為（主調）配和聲
When people harmonize, they sing or play notes which are different from the main tune but which sound nice with it.
例句
Bremer and Garland harmonize on the title song, 'Meet Me in St. Louis'.布雷默和加蘭為主題曲《相逢圣路易斯》配和聲。