"my spies tell me that you had a good time last night"
"he caught sight of the king's men coming over the ridge"
"spy for the Russians"
Tom began to spy into a complicated affair.
汤姆开始调查一件复杂的事件。
The old lady likes spying into other people's affairs.
这个老太太喜欢窥探他人的事情。
She often spies on her neighbours.
她经常窥探邻居。
He was paid by the police to spy on other students.
他受警察雇佣监视其他学生的行动。
The detective spied out the suspected thief.
侦探察出了被怀疑的贼。
Miss Octavia, spying her through the blinds, came down..to meet her.
牛津高阶第八版
美国韦氏词典
Dictionary.com
Free Dictionary
维基百科 (自由的百科全书)