混种

例句：

1. 1. The farmer is trying to breed a new strain of wheat.
   农民正试图培育一种新的小麦品种。
2. 2. The cat is a crossbreed, with both black and white coats.
   这只猫是杂种，既有黑色也有白色。
3. 3. The scientists are studying the genetics of crossbreeding.
   科学家们正在研究杂交的遗传学。