basic fare

例句：

1. 1. The train ticket costs 50 dollars for a one-way trip.
   单程火车票价为50美元。
2. 2.The hotel charges an extra 10% on top of the basic fare.
   酒店在基本费用上加收10%。
3. 3.The restaurant offers a special deal for customers who show their basic fare card.
   该餐厅为展示其基本费用卡的顾客提供特别优惠。