acknowledge
US /əkˈnɑː.lɪdʒ/
UK /əkˈnɑː.lɪdʒ/

1.
2.
确认, 致谢
show that one has noticed or recognized (someone or something) by an act, gesture, or remark
:
•
He didn't even acknowledge my presence.
他甚至没有承认我的存在。
•
The driver acknowledged the pedestrian with a nod.
司机向行人示意。