Activists for sharks note that the fish are valuable in the ocean.
乐观者指出鲨鱼在海洋中是具有价值意义的。
What fish is a valuable industry on the West Coast?
哪一种鱼类是西岸的贵重工业？
These crustaceans provide a valuable food source for some fish.
这些甲壳纲动物是某些鱼类重要的食物来源。
These crustaceans provide a valuable food source for some fish.
这些甲壳纲动物是某些鱼类重要的食物来源。
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