单词	ear trumpet
释义	ear trumpet noun : a trumpet-shaped instrument used for collecting and intensifying sounds to aid a person with defective hearing Word History First Known Use 1731, in the meaning defined above
随便看	Digynia digynian digynous dihal- dihalide dihalo- dihedra dihedral dihedral angle dihedrals dihedrons dihexagonal dihexagonal prism dihexagonal pyramid dihexagonal-dipyramidal dihexahedral dihexahedron dihybrid dihybridisms dihybrids dihydr- dihydrazone dihydric dihydrite dihydro-

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