noun
tooth
/tu:θ/
tooth 是什么意思
牙齿,齿状物,爱好,装以齿
Hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense something resembling the tooth of an animal toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell a means of enforcement.
词性
noun
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挑战
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