canal surcharge

例句：

1. 1.The construction of the canal has increased the cost of transportation for goods.
   运河的建设增加了货物运输的成本。
2. 2. The government has decided to impose a canal surcharge on all imported goods.
   政府决定对所有进口商品征收运河附加费。
3. 3. The canal is a vital link in the transportation network, and its maintenance is crucial for the smooth operation of the system.
   运河是运输网络中至关重要的一环，其维护对于系统的顺畅运行至关重要。