单词	ear defender
释义	ear defender noun : a device (such as an earplug) designed to lessen the transmission of excessive or damaging sound to the auditory receptors of the inner ear Word History First Known Use 1915, in the meaning defined above
随便看	mummy brown mummy case mummy cloth mummy pot mummy wheat mummychog mummying mummyings mump mumped mumper mumpers mumping mumpish mumps mumpsimus mumpsimuses mumruffin mums mumu mumus mun Muncerian munch Munchausen

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