So there is about between 12-16 rules that are there if you learn them, just naturally your voice will take in fluctuation and intonations. So I had the opportunity to learn actually here in New Jersey from people.

大概有12至16条字母的发音规则,如果你学习了，那么很自然地你的声音,就会有起伏和音调,我当时正好有机会在新泽西学习这个。

普林斯顿公开课 - 人性课程节选

But it was voice-activated, so like, if you yell, it would like start blowing bubbles.

但是它是可以通过语音控制的。所以说，你一大叫，它就开始冒泡。

气泡项目 - SpeakingMax英语口语达人