acmen.顶点；极点
acknowledgevt.承认；告知收到；公认；表示感谢；注意到
acknowledgment n.承认；承认书；感谢
acknowledgment character[计] 肯定字符, 确认字符
"the partners were delighted with the recognition of their work"
"she seems to avoid much in the way of recognition or acknowledgement of feminist work prior to her own"
"the student's essay failed to list several important citations"
"the acknowledgments are usually printed at the front of a book"
"the article includes mention of similar clinical cases"
"she must have seen him but she gave no sign of acknowledgment"
"the preface contained an acknowledgment of those who had helped her"
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