We caught him eavesdropping outside the window.

我们撞见他正在窗外偷听。

《牛津词典》

Here Tink, who was in her bedroom, eavesdropping, squeaked out something impudent.

叮叮铃在她的卧室里偷听着，尖声说了些无礼的话。

youdao

She has been eavesdropping on her brother and his sweetheart.

她一直在偷听她哥哥和他情人的谈话。

youdao

that Phoebus Apollo was actually eavesdropping on the poet's discourse.

关于阿波罗是否在背地里偷听诗人的演说。

耶鲁公开课 - 弥尔顿课程节选

Last month Nato raided two Bosnian Serb military installations, saying they were eavesdropping of the alliance's signals.

BBC: Enthusiast watches Nato spy pictures

They turned out to be company security personnel, monitoring the board meeting to prevent eavesdropping.

NEWYORKER: The Kona Files

It's unclear why the Russians were eavesdropping on the mother or for how long.

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