harmonious

形容词 harmonious:

1. musically pleasing
2. exhibiting equivalence or correspondence among constituents of an entity or between different entities
   同义词：proportionate, symmetrical
3. suitable and fitting
   同义词：appropriate
4. existing together in harmony

1. Don't let this trifling matter affect our harmonious relations.
   别为小事伤了和气。
2. The harmonious use of language, as in poetry or prose.
   韵律语言的和谐的运用，如在诗歌或散文中
3. The sky and the sea make a harmonious picture.
   天空和大海构成了一幅和谐的画面。
4. Relations with our neighbors are very harmonious at the moment.
   我们目前同邻居们的关系十分和谐。

har.mo.ni.ous

adj.（形容词）
Exhibiting accord in feeling or action.
和谐的：在感情或行为上表现出谐调一致的
Having component elements pleasingly or appropriately combined:
融洽的：构成要素的完美结合的：
例句：
a harmonious blend of architectural styles.
各种建筑风格的完美的结合

Characterized by harmony of sound; melodious.
悦耳的：声音和谐的；悦耳的

【引伸】
harmo.niously
adv.（副词）
harmo.niousness
n.（名词）