eavesdropping

1.Suddenly the kids,who had been eavesdropping,flew into the room.

突然间，一直的孩们飞进屋来。

2.I had no scruples about eavesdropping.

我对没有丝毫顾忌。

3.She knew you were going to have a baby. She must have been eavesdropping on your conversation.

她知道你们想有个孩。她准是总你们的谈话。