shuāng​guǐ

double track

shuāng​guǐ double track

  1. shuāng numeraladjective
    two
    Two; both; dual; twin; double; twofold
  2. rail
    (bound form) a rail or track for vehicles like trains and trams; a steel rail used in construction

shuāng​guǐ dual-track system

  1. shuāng numeraladjective
    two
    Two; both; dual; twin; double; twofold
  2. standard
    (bound form) a rule, regulation, or established order; a normal way of doing things