见 life
refrain or prevent someone from speaking or from disclosing something secret
使保密
refrain from disclosing information about something; keep something secret
对…保密
(informal)without anyone knowing or noticing; secretly or unobtrusively
(非正式)悄悄地，秘密地，偷偷地，私下地
(of a person or animal) extremely quiet or docile
（人，动物）极温和的，极温顺的；文静的