bilaterians 

  1. 名詞
bilaterian複數: 兩側對稱的動物

    
                        
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例句

                

                    
    
                                                    
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                                Little is known about the possible ancestor of bilaterians .                            
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                                That would imply that the earliest bilaterians had similar coelosclerites.                            
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                                Unlike bilaterians , radiata only have two primordial cell layers, endoderm and ectoderm.                            
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                                Some say that early bilaterians (e.g. arthropods and echinoderms) arose in the Precambrian.                            
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                                The Doushantuo formation harbours microscopic fossils that may represent early bilaterians .                            
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