Diphthongal
a. 二合元音的, 連字的
??? 情景例句
I don't know what I would do without you.
我真不知道沒有你們我怎么辦。
Speech is the picture of the mind.
言為心聲。
From the top of it, you could see up to a distance of 130 kilometres on a clear day.
在晴朗的日子里，從樓的頂層你可以看到130公里遠的地方。