oun组合的单词发音规律
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...