verb 다운로드 🔗공유 역교배하다 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. " 식물 육종가는 내병성 부모와 새로운 잡종 토마토를 역교배하여 회복력을 향상시켰다. biology agriculture plant animal AI와 채팅어휘 게임독해 연습