marine economics

例句：

1. 1. Marine economics is a field of study that focuses on the economics of the ocean.
   海洋经济学是一门专注于海洋经济的研究学科。
2. 2. The development of marine economics has greatly contributed to the growth of the tourism industry.
   海洋经济学的发展极大地促进了旅游业的增长。
3. 3. Marine economics plays an important role in the sustainable development of our coastal areas.
   海洋经济学在沿海地区的可持续发展中起着重要作用。