- 承认(为真的或曾说过)，自认；认知：
to acknowledge that the earth is round
承认地球是圆的
He refused to acknowledge defeat.
他拒绝认输。
to acknowledge one's mistakes
承认自己的错误
- 承认(或确认)…的权威(或主张、权利、要求、功绩等)：
The students acknowledged the authority of the student council.
学生们承认学生会的权威。
She acknowledged him as her heir.
她承认他为自己的继承人。
- 确认(收悉)；告知(信函、礼物、纪念品、支付的款项等的)收到：
to acknowledge a letter
告知收到来信
I acknowledge receipt of your letter of May 1.
你5月1日来信收悉。
- 对…表示感谢，就…表示谢意，答谢；报偿：
to acknowledge a favour
表示好感
Jack acknowledged the gift with a pleasant letter.
杰克附一封友好的信对所赠礼物表示感谢。
- 对…打招呼，理会；答理；对…作出反应：
to acknowledge an acquaintance by nodding
以点头向熟人打招呼
I acknowledged his politeness with a bow.
我向他鞠躬还礼。
to acknowledge a greeting
答礼(或：表示注意到某人的问候)
- 【法律】公证；确认(债务等)，确认…有法律效力(或约束力)：
to acknowledge a debt
确认债务
to acknowledge a deed
公证契约