有关鲨鱼的介绍 (用英语)
要用英语,字数不超过100,急用!
人气:333 ℃ 时间:2020-05-16 10:38:04
解答
Sharks (superorder Selachimorpha) are fish with a full cartilaginous skeleton[1] and a streamlined body.They respire with the use of five to seven gill slits.Sharks have a covering of dermal denticles...
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