Researchers observed lip smacking at an average of 4.15 hertz.

研究人员观察到咂嘴的平均频率为4.15赫兹。

(lips smacking) - Is there lipstick on me?

（咂嘴）——我身上有口红吗？

(lips smacking) (crunching) - Do you like it, Theo?

（咂嘴）（嘎吱嘎吱） - 你喜欢它吗，西奥？

" Mmmmwah! " his lips smacked against the bell.

“嗯！”他的嘴唇撞到了门铃上。

(lips smacking) I don't know how I feel about just eating that.

（咂嘴）我不知道吃这个感觉如何。

That's it! So – lip smacking and vocalisations – together are maybe a possible step between the sounds of other monkeys – and human speech.

就是这样！因此边吧嗒嘴边发声或许是其他猴子所发出的声音与人类语言之间的一步之差。

The call types included what researchers called a grunt, a panted grunt, a hoo sound, a pant hoot, a bark sound, a panted bark, a pant, a scream, a panted scream, a whimper, a panted roar and the non-vocal lip smack and raspberry sounds.

这些叫声类型包括研究人员所说的咕哝声、气喘吁吁的咕哝声、呼呼声、喘气声、吠声、气喘吁吁的吠声、喘气声、尖叫、气喘吁吁的尖叫、呜咽声、气喘吁吁的吼声以及无声的咂嘴声和咂舌声。