oneThis plural form is used for numbers like: 1
%{count} member
otherThis plural form is used for numbers like: everything else
%{count} members
%{count} miembro
%{count} miembros
%{count} member
%{count} members
%{count} member
%{count} members
%{count} member
%{count} members
%{count} miembro
%{count} miembros
%{count} miembro
%{count} miembros