noun🔗Share無脊椎動物An animal without vertebrae, i.e. backbone."Many students learn about invertebrates, like insects and worms, in biology class because they are animals without a backbone. "多くの生徒は、昆虫やミミズのような無脊椎動物について生物の授業で学びます。なぜなら、それらは背骨のない動物だからです。animalbiologyorganismChat with AIVocabulary GamePractice Reading
noun🔗Share臆病者, 意気地なしA spineless person; a coward."He promised to defend his friend, but when the bully arrived, he became one of the invertebrates who stood silently by. "彼は友人を守ると約束したが、いじめっ子が現れると、彼は黙って見ている臆病者の一人になった。characterpersonChat with AIVocabulary GamePractice Reading
