We change the pitch by tightening the vocal chords to make our voice higher and loosening them to make a lower sound.

我们收紧声带让音调变尖，让我们的声音听上去高亢尖利；放松声带，则使声音低沉。

Sakanoue said workers could also set the toy on their desks for encouragement as they make a sales pitch by telephone.

坂上表示，上班族也可以将它放在办公桌上，在进行电话营销时得到些许鼓励。

He thought I had abused his hospitality to make a demagogic pitch to white voters.

他觉得我滥用了他的盛情，对白人选民做煽动性的自我推销。

Because it cost a dime to make it pitch back and forth, we had to sit on the horse once a week and to pretend we were riding.

要让马前后摇动起来得投进一角硬币，因此，我们只好每周一次干坐在马上，假装骑马来过过瘾。

I'd go into the heavily ethnic blue-collar areas and make my best pitch, but I could tell I was hitting a lot of stone walls.

我常常跑到少数族裔居多的蓝领阶层居住区，竭力进行宣传，但是我不怕告诉你们，我经常碰壁。