1 [U] the fact that you can identify sb/sth that you see 认出:
When I arrived no sign of recognition showed on her face at all.我到达的时候,从她脸上根本看不出她认得我。
2 [U] [sing] the act of accepting that sth exists, is true or is official 承认;认可
3 [U] a public show of respect for sb's work or actions (对某人工作或行动的)表彰,赞赏:
She has received public recognitionfor her services to charity.她热心慈善事业,深受公众赞赏。Please accept this gift in recognition of the work you have done.请接受这份表彰你的所为的礼物。