The " shwa" is that " uh" like in butter or unutterable.

因为" shwa" 中" uh" 的音与" butter" 和" unutterable" 中" uh" 的音相同。

One thing that makes English words really hard to spell is the " shwa" .

英语单词里很难拼写的一个单词是" shwa" 。

The shwa sound, that a American sound, in Irish, becomes a little bit more rounded.

shwa 声音， 即美国声音， 在爱尔兰语中变得更加圆润。

Space and ay, the AY diphthong here in exploration, TION is the SH, shwa N ending.

Space and ay，探索中的 AY 双元音，TION 是 SH，shwa N 词尾。

I do have a video all about the 'shwa' sound at the end of words which you can see by clicking up here.

我确实有一段关于单词末尾的“shwa”音的视频，您可以点击此处查看。