EJDict
ライセンス: CC0 (Public Domain)
日本語WordNet
(military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
a secret watcher; someone who secretly watches other people; "my spies tell me that you had a good time last night"
catch sight of
catch sight of; to perceive with the eyes; "he caught sight of the king's men coming over the ridge"
JMdict
AIによる解説
A person who secretly gathers information about enemies or competitors; to observe secretly.
ライセンス: KeyLang Original
Spies infiltrated the enemy organization.
スパイが敵の組織に潜入しました。
The spy's infiltration went undetected.
そのスパイの潜入は発覚しなかった。
The spy sent a cryptogram to headquarters.
スパイは本部に暗号文を送った。
Pronunciation data from ipa-dict (MIT License) based on cmudict-ipa by @lingz