oun音标为：[aʊn]，双元音ou[aʊ]发音饱满，再加上鼻音。
oun [aʊn]
如：
sound soundly soundtrack round around roundabout hound猎犬 ground bound lounge休息厅 pound mound土丘 found founder foundation flounder挣扎 flounce愤愤而走，荷叶边 mount mountain mountainous announce宣布 announcement denounce 谴责 denouncement renounce放弃 renouncement pronounce发音 noun pronoun wound wounded astound
例外：
announce，denounce，renounce，renounce的动词写法是-oun-，发音为[aʊn]，名词的写法是变-oun-为-un-，发音为[ʌn]。
annunciation denunciation renunciation pronunciation。
