窃听

tā hài pà yǒu rén qiè tīng bù gǎn zài diàn huà li shuō

他害怕有人窃听，不敢在电话里说。

He was afraid of being bugged, and didn't dare to talk over the phone.

tā zài chuāng wài qiè tīng wū li rén de tán huà

他在窗外窃听屋里人的谈话。

He hid just outside the window and eavesdropped on the conversation going on inside the room.

qiè tīng tán huà

窃听谈话

listen in on a conversation

fǎn qiè tīng

反窃听

debug

qiè tīng diàn huà

窃听电话

wiretap a telephone

zhēn chá rén yuán zài xián yí fàn de diàn huà shang zhuāng qiè tīng zhuāng zhì

侦察人员在嫌疑犯的电话上装窃听装置。

The detectives put a tap on the suspect's telephone.