第三人称单数： outbreeds
过去式： outbred
过去分词： outbred
现在分词： outbreeding

But outbreed too far and other difficulties arise as genetic incompatibilities between the parents make reproduction harder .

但是远交的亲缘关系过远以及父母基因不兼容性所导致的问题会使得繁衍更困难。

Many anglo-saxon americans worried that eastern and southern europeans would " outbreed " them and take over their once - " pure " race .

许多盎格鲁撒克逊美国人担心，东部和南部欧洲人将“凌驾”他们并接管其一次“纯粹”的比赛。