marine ichthy-physiology

例句：

1. 1. Marine scientists study the oceans' ecosystems.
   海洋科学家研究海洋生态系统。
2. 2. The coral reef is a habitat for many marine species.
   珊瑚礁是许多海洋物种的栖息地。
3. 3. The ship sank in the vast expanse of the ocean.
   这艘船在广阔的海洋中沉没了。