是/b/音。
baby， big， back， before...
This little baby is the hope of our whole family.
这个小婴儿是我们全家的希望。
The shoes are too big for me.
这双鞋对我来说太大了。
The back pain left the patient suffering.
背部疼痛让这个病人受尽了折磨。
I will brush my teeth beforebreakfast.
我会在早餐前刷牙。
