Dolphins lack vocal cords, nevertheless creating sounds: a complicated system of whistles, squeaks, moans, trills, and clicks are produced by sphincter muscles inside the blowhole.

海豚没有声带，但却能发声：一个由口哨声、吱吱声、呻吟声、颤音和咔嚓声组成的复杂系统是由喷水孔内的括约肌产生的。

youdao

It sounds like you could do with an assistant but that's obviously not possible, so what about having an online system that students can use to do their scheduling?

听起来你需要一个助手，但这显然是不可能的，那如果有一个在线系统来帮助学生做他们的日程安排呢？

youdao

To learn his system, people must first know how to write letters of the alphabet and learn which sounds they represent.

为了学习他的系统，人们必须首先知道如何书写字母表中的字母，并学习它们的发音。

youdao

Phonology is the system of sounds that languages have.

语音是语言的声音系统

耶鲁公开课 - 心理学导论课程节选

By feeding hundreds of sample sounds into the system, the software can distinguish different threats from various sounds - and not just based on volume.

BBC: New CCTV technology senses aggression from sound

It sounds like the system will evolve into one where the government signs off on a certain premium increase every year, then a fixed amount of the premium is spent, no more or less.

FORBES: HMOs Lose A Big ObamaCare Vote In Orlando

Simple it may be, but the music player can deal with a handful of common formats including MP3, WMA, AAC and MP4 -- all can be set as your ringtone or system sounds within the player.

ENGADGET: LG GW300 impressions Mobile