espy
verb [ T ] old-fashioned uk/esˈpaɪ/ us/esˈpaɪ/
突然（或意外地）看见（尤指远处的东西）
to suddenly or unexpectedly see something, especially something a long distance away
She suddenly espied someone waving at her from the window. 她突然看到有人正在窗口向她挥手。
Synonyms: spot spy