色欲tv国产亚洲_久久午夜夜伦鲁鲁影院_一级特黄无码A片在线观看_免费黄色性感一级片_国内破女处破苞视频hd_欧美三级少妇免费_亚洲美腿丝袜福利一区_白丝秘书被躁到高潮视频av_91麻豆精品分享的内容是很丰富的_国产原创免费av网站

首頁英語詞典sigmatismsigmatism的意思

sigmatism

['siɡm(xù)?tiz?m]
  • n. 濫用S音；s發(fā)音困難

英文詞源

sigmatism (n.)
1888, "difficulty in pronouncing 'S,'" from comb. form of sigma + -ism. As "use or recurrence of 'S'" from 1889.