start the operation ofの例文

• december 30 , 1949: the expansion and improvement work of misasagi station , yamashinaeki-mae station and shinomiya station , which was required to start the operation of two-car trains , was completed .
  1949年（昭和24年）12月30日 - 2両連結運転開始に伴う御陵駅、山科駅前駅、四宮駅の各駅の拡張改良工事完了。