A (雙) 双 shuang1
pair/ twin/ dual/ double/ di-/ bi-
Zählwort Paar
B (雙方) 双方 shuang1fang1
both sides/ the two parties
beide Seiten, bilateral
C (雙) 双 shuang1
two/ both/ twin/ dual/ double/ twofold/ even
Zählwort Paar
đôi
cả hai bên
thai song sinh