变调
The Frog-Footman repeated, in the same solemn tone, only changing the order of the words a little.───仆人只是把语序换了一下，用同样严肃的声调重复了一遍。
Then you can find the best tone by changing the position of middle triangle.───然后你能通过改变中间三角形的位置来找到最好的色阶。
Changing her tone, she continued in a more friendly manner, "Come now; you don't understand me."───她改变了语气，用一种更友好的态度继续说：“快走吧；你不懂我。”
About the Teaching in Changing Tone of the Rising Tone in Putonghua───关于普通话上声变调的教学问题
changing tones───变调
changing note───更改注释
changing notes───更改注释
changing round───交换场地：
changing down───放慢车速
changing over───对换，对调位置；改变成；转接
changing room───更衣室
hanging on───坚持下去；不挂断；握住不放
ringing tone───n.（英）电话的振铃声