单词	cryogenics
释义	cryogenicscry‧o‧gen‧ics /ˌkraɪəˈdʒenɪks/ noun [uncountable] Word Origin WORD ORIGINcryogenics Origin: 1900-2000 cryogen ‘substance producing low temperatures’ (19-21 centuries), from Greek kryo- (from kryos ‘very cold’) + English -gen ‘producing’ (from Greek -genes ‘born’) Examples EXAMPLES FROM THE CORPUS This removes half of the cryogenics problem but leaves us with liquid oxygen. the scientific study of very low temperatures—cryogenic adjective
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