'Duh' and 'yah' come together to make a 'ja' sound.
" Duh" 和" yah" 合了" ja" 这个音。
There are regional dialects that are notable for lacking rhoticity, such as the classic Bostonian Pahk yah cah in Hahvahd Yahd for Park your car in Harvard Yard, but the overwhelming majority of Americans growl out the R.
也有些地区方言的显著特点就是没有卷舌化的现象,一个典型的例就是波士顿人把Park your car in Harvard Yard(把你的车停在哈佛校园里)说Pahk yah cah in Hahvahd Yahd,但是绝大多数美国人的R音还是很浓重的。