bei
modal particle indicating indicating lack of enthusiasm
modal particle indicating that things should only or can only be done a certain way
gē bei
arm
CL:條|条[tiao2],隻|只[zhi1]
Sān běi
China's three northern regions, 東北|东北[Dong1 bei3], 華北|华北[Hua2 bei3] and 西北[Xi1 bei3]