port capacity for loading and unloading cargos

例句：

1. 1. The port is located in the heart of the city.
   该港口位于市中心。
2. 2. The ship was delayed due to the heavy rain at the port.
   由于港口大雨，船只延误了。
3. 3.The port authorities are responsible for ensuring safety at the port.
   港口当局负责确保港口的安全。