the action of breeding or causing animals to breed with members of another breed or group

Neanderthals simply disappeared through interbreeding with the modern newcomers. 尼安德特人通过与后来出现的人种杂交，就这么消失了。

The main threat to the species is interbreeding with rainbow trout. 对该物种的主要威胁是与虹鳟鱼杂交。