moo-cow ['mu:.kau] n. [儿]奶牛 例句与用法: The characteristic sound uttered by cattle; a moo. (牛)哞哞的叫声牛发出的典型声音,哞哞叫 词形变化: 名词复数: moos | 动词过去式: mooed | 动词过去分词: mooed | 动词现在分词: mooing | 动词第三人称单数: moos | 详细释义: n. 【儿】牛