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
It's here, Robbie.
就在这儿, Robbie。
Have a heart!
行行好嘛!
It is not a simple competition for a fixed amount of food determined by the physical environment,