recognition ·noun (KNOW)
Definition: when you know something or someone because you have seen or experienced them before Level: C2
尽管我热情地挥手，但她的表情没有表现出任何认识我的迹象。
Despite my enthusiastic wave, her expression showed no ___recognition whatsoever.
几十年后重返童年时的街区，看到那棵老橡树，我感到一阵熟悉的悸动。
Returning to my childhood neighborhood after decades, I felt a pang of ___recognition at the old oak tree.
由于巧妙的伪装，面部识别软件未能将他识别出来。
The facial ___recognition software failed to identify him due to the clever disguise.