wee-wee         
 noun  informal child's word uk/ˈwiːˌwiː/ us/ˈwiːˌwiː/
 [ C ]撒尿 
an act of urinating
  Do you need/want (to do) a wee-wee before we go out? 我们出去之前你要不要去撒尿? 
  [ U ]尿 
urine
 wee-wee      
verb [ I ]  informal child's word uk/ˈwiːˌwiː/ us/ˈwiːˌwiː/
 撒尿
to urinate