placid
adjective uk/ˈplæs.ɪd/ us/ˈplæs.ɪd/
宁静的;平和的
having a calm appearance or characteristics
a slow-moving and placid river 平缓宁静的河流
the placid pace of village life 乡村悠然的生活节奏
She was a very placid (= calm and not easily excited) child who slept all night and hardly ever cried. 她是个非常安静的孩子，整晚上都睡觉，几乎不哭。
Synonyms: calm equableeven-tempered