Question

acknowledge
ac.knowl.edge  AHD[²k-n¼l“¹j]   DJ[#k6nKl!d9]  KK[#k6n$l!d9]
v.tr.（及物动词）  ac.knowl.edged,ac.knowl.edg.ing,ac.knowl.edg.es 缩写ack.
1.To admit the existence, reality, or truth of.
    承认：确认某物的存在、现实或真相
2.To recognize as being valid or having force or power.
    确认有效，承认权威：确认有效或有权力或权威
3.To express recognition of:
    承认：表示承认…：
    acknowledge a friend's smile.
    对一个朋友的笑做出反应
4.To express thanks or gratitude for.
    答谢，致谢，鸣谢：表示对…的感谢或感激
5.To report the receipt of.
    告知收到，确认收悉
6.Law To accept or certify as legally binding:
  【法律】 公证，确认：作为法律约束力而接受或确认：
    acknowledge a deed.
    确认一行为
ORIGIN
1.Probably blend of Middle Englishknowlechen [to acknowledge]  fromknowen [to know] * see  know
    可能混合了 中古英语knowlechen [认识]  源自knowen [知道] *参见know
2.Middle Englishaknouen [to recognize]  from Old Englishoncn³wan [to know]  on- [on] * see  on  cn³wan [to know] * see  know
    中古英语aknouen [确认]  源自 古英语oncn³wan [知道]  on- [在…上] *参见oncn³wan [知道] *参见know
DERIVATIVES
▪acknowl“edgeable  adj.（形容词）
SYNONYMS
1.acknowledge,admit,own,avow,confess,concede
2.These verbs mean to make a disclosure, usually with reluctance or under pressure. To
    这些动词都表示不情愿或在压力之下揭示真相。
3.acknowledge   is to accept responsibility for something one makes known:
    acknowledge  表示承担使某事公开的责任：
    He acknowledged that the purchase had been a mistake.
    他承认购买那东西是个错误之举。
4.Admit   usually implies marked reluctance in acknowledging one's acts or accepting a different point of view:
    Admit  常常暗含不情愿承认某人的行为或接受不同的观点：
  “There are some faults which men readily admit, but others not so readily”  (Epictetus).
    “虽然有人承认了一些错误，但另一些不是这么主动” （爱比克泰德）。
5.Own   stresses personal acceptance of and responsibility for one's thoughts or deeds:
    Own  强调对某人的思想和行为的个人接受或个人责任：
    She owned that she had fears for the child's safety.
    她承认她对孩子的安全担心。
6.Avow,  a strong term, means to assert openly and boldly:
    Avow，  一带强烈意义的词，表示公开大胆地宣扬：
  “Many a man thinks, what he is ashamed to avow”  (Samuel Johnson).
    “很多人都考虑过那些他们羞于说出来的事” （萨谬尔·约翰逊）。
7.Confess   usually emphasizes disclosure of something damaging or inconvenient to oneself:
    Confess  通常指揭露对某人不利或有损坏的事：
    I have to confess that I lied to you. To
    我得承认我对你撒了谎。
8.concede   is to admit something, such as the validity of an argument, often against one's will:
    concede  指确认论点的有效性等事，通常是指违背某人意愿的：
    The lawyer refused to concede that the two cases were at all similar.
    律师拒绝做出这两宗案件相似的表示。