overheard

动词 overhear:

1. hear, usually without the knowledge of the speakers
   同义词：catch, take in, overhear

1. I overheard him say/saying he was going to France.
   我偶然听到他说他要到法国去。
2. I overheard them quarrelling.
   我无意中听到他们吵架。
3. I overheard their argument/them.
   我偷听到他们争论[他们说话]。
4. I overheard some cruel remarks about him.
   我无意中听到了一些议论他的粗鲁的话。
5. I overheard them saying they were unhappy.
   我偶然听到他们说，他们很不快乐。