You're the talk of the town. 你成了镇上的话柄.
You've got sharp ears. 你的耳朵真灵. I overheard their conversation. 我无意中听到他们的谈话.
It's a real scoop. 这真是一则内幕新闻. It's a real big news. 这真是大新闻.
Ever heard of it? 听过这回事吗? I heard it through the grapevine. 这是我从谣传里听来的.
I've heard a few tidbits of gossip. 我听到些有趣的谣言.