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发表于:2020-08-26
Accordingtonewresearch,afin-limbeddolphinshouldbeafairlysmartfellow,butheisnotatypicalaquaticmammalofhiskind.InChina,conservationeffortshavealreadyfailedtoprotecttheYangt...
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发表于:2018-01-26
Thewhaleisamammal.Awhaleisakindofmammal.Asamammal,wemustobeytherulesofbiology.Around15%ofmammalspeciesand11%ofbirdspeciesareclassifiedasthreatenedwithextinction.Anewspeci...
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发表于:2024-01-07
1、AhoofedmammaloftheorderPerissodactyla.2、largeSouthAfricanantelope;consideredtheswiftesthoofedmammal.3、anyofvariousnonruminanthoofedmammalshavingverythickskin:elephan...