The results indicate that there were significant differences in mandarin retroflexion among different groups categorized by sex , fathers ' ethnic groups , mothers ' educational levels , and in english retroflex sounds according to different residency areas .

研究结果显示，受访者的国语卷舌音在不同的性别、父亲族群及母亲教育程度等社会因素下表现出显著差异性，而其英语卷舌音则由於不同居住地区有显著的差异。

What jews do on christmas eve chinese jewish spectacular eat food go to the movies happy hanukkah chappy chanukah merry 2cc two characters kosher schticky rice grandmother fortune cookies mandarin language learning videos qingdao garden restaurant pinyin pirate retroflex sound zheng jie .

两个汉子犹太人圣诞节活动犹太婆婆幸运签青岛园语饼吃中国饭去看电影祝大家光明节快乐普通话卷舌音郑洁。