v. 承认( acknowledge的第三人称单数 ); 鸣谢; 对…打招呼; 告知已收到

v declare to be true or admit the existence or reality or truth of

v report the receipt of

v express recognition of the presence or existence of, or acquaintance with

v express obligation, thanks, or gratitude for

v accept as legally binding and valid

v accept (someone) to be what is claimed or accept his power and authority