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1. Thecynodontin is a rare speciesof fish that can be found in theocean.
这种鱼是稀有的，可以在海洋中找到。
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2. The cynodontinhas been used as a food source forcenturies.
这种鱼被用作食物来源了几个世纪。
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3. The cynodontin isa protected species and must be caught bylicensed fishermen only.
这种鱼是一种受保护的物种，只能由持牌渔民捕捉。