英汉词典

1.The shifted of the sound changes phenomena in Shandong district proves that Round-mouth characters of Zhi-system read in labiodental firstly occur in fricative.

由这种音变现象在山东地区的地域流变情况可见，知系合口字的唇齿化有可能首先发生于擦音声母。

2.The shifted of the sound changes phenomena in Shandong district proves that Round-mouth characters of Zhi-system read in labiodental firstly occur in fricative.

由这种音变现象在山东地区的地域流变情况可见，知系合口字的唇齿化有可能首先发生于擦音声母。