“后部”的拼音为：hòu bù...

有个婴儿在教堂后部大声啼哭。There was an infant squalling in the back of the church.往婴儿的脑后部轻撩些水。Trickle water gently over the back of your baby's head.飞机的最后部the rearmost section of the aircraft...

“后部”的英语可以翻译为：the back of，hindside，rear，tail end，heel ...