diphthong
n
union of two vowel sounds or vowel letters, eg the sounds in pipe , the letters ou in doubt 二合元音, 复合元音, 双元音(如pipe 中的 音); 复合元音字母(如doubt中的ou). Cf 参看 monophthong.
🗣️ 情景例句
Where are they?
草图在哪儿?
What is the color of your new book?
你的新书是什么颜色的?
He waved desperately to his companion, who had been water skiing for the last fifteen minutes.