verb 下载 🔗分享 回交,反交。 To cross a hybrid with one of its parents. Examples : "The plant breeder backcrossed the new hybrid tomato with its disease-resistant parent to improve its resilience. " 植物育种家将新的杂交番茄与它具有抗病性的亲本进行了回交,以提高它的抗逆性。 biology agriculture plant animal 与AI对话词汇游戏阅读练习