secondary port

例句：

1. 1.The secondary port is located in the city's outskirts.
   这个次要港口位于城市的郊区。
2. 2. The port is a crucial link for the country's trade with other countries.
   这个港口是该国与其他国家贸易的关键纽带。
3. 3. The secondary port has been experiencing increased traffic due to the construction of new infrastructure.
   由于新建基础设施的建设，这个次要港口的交通量有所增加。