You can tell the age of some fish by counting the rings on their scales.
你可以通过数鱼鳞上的圈来判断一些鱼的年龄。
Oysters change from male to female.
牡蛎可以从雄性变成雌性。
Sharks have no bones?
鲨鱼没有骨头?
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You can tell the age of some fish by counting the rings on their scales.
你可以通过数鱼鳞上的圈来判断一些鱼的年龄。
Oysters change from male to female.
牡蛎可以从雄性变成雌性。
Sharks have no bones?
鲨鱼没有骨头?