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1. Oxford American Dictionary

   stratification

   • IPA[ˌstradəfəˈkāSHən]

   美式

   • n.
     the arrangement or classification of something into different groups；the formation of strata in rock

   • noun: stratification, plural noun: stratifications

2. • 釋義

   n.

   名詞

   • 1. the arrangement or classification of something into different groups wealth is the main symbol of social stratification stratification of patients into low-, moderate-, and high-risk groups
   • ▪ the formation of strata in rock rock seams without any distinct stratification geological stratifications
   • ▪ the placing of seeds close together in layers in moist sand or peat to preserve them or to help them germinate following cold stratification, seeds were germinated in greenhouses
3. • 更多解釋

   stratification

   • IPA[ˌstratɪfɪˈkeɪʃn]

   英式

   • n.
     the arrangement or classification of something into different groups: wealth is the main symbol of social stratification stratification of patients into low-, moderate-, and high-risk groups

   Oxford Dictionary