ascertain

ascertain
[ˌasəˈteɪn]
verb
  1. [with obj.]find (something) out for certain; make sure of
    查明；确定
    an attempt to ascertain the cause of the accident.
    力求查明事故原因的努力。
    [with clause]management should ascertain whether adequate funding can be provided.
    管理人员应该确定能否提供足够的资金。
派生
ascertainable
adjective
ascertainment
noun
语源
  1. late Middle English (in the sense 'assure, convince'): from Old French acertener, based on Latin certus 'settled, sure'
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