Okay, so there are two designations used for God. Yahweh, which is the sacred Tetragrammaton, it's written with four letters in Hebrew, they don't include vowels.

上帝有两个名字，耶和华，犹太人上帝的名字,在希伯来语由四个字母构成，希伯来语没有元音。

耶鲁公开课 - 旧约导论课程节选

You can read every sound that is made, and they produced their alphabet.

就可以读出每一个能发的元音,他们还创造出了他们的字母系统

耶鲁公开课 - 古希腊历史简介课程节选

I think I mentioned to you that the Greeks improved upon it and made it a true alphabet by taking some signs that they didn't need for their own language by turning them into vowel sounds.

我想我向你们提到过希腊人将这种字母表改良,并使其成为真正的字母表,他们把一些并不需要的符号,变成元音使用

耶鲁公开课 - 古希腊历史简介课程节选