A vowel is a sound such as the ones represented in writing by the letters A, E, I, O, and U, that you pronounce with your mouth open, allowing the air to flow through it. Compare consonant.
双语例句
例： The vowel in words like 'my' and 'thigh' is not very difficult.
在“ my”和“ thigh”这样的单词中的元音并不难发。