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M-W 韦氏词典解释为
a science of the establishment and maintenance of health
2 : conditions or practices (as of cleanliness) conducive to health
杊ygienic *h*-*j*-nik, -*je- also -j*-*e-nik adjective
杊ygienically -ni-k(*-)l* adverb
杊ygienist h*-*j*-nist, *h*-*j*-, h*-*je- noun
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