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
Hi, Susan.
嗨, Susan。
Through obedience learn to command.
只有学会听命于人,方能学会向人发号施令。
You will enjoy your stay here if you pay attention to our street signs.