backcross /'bæk,krɔs/ 📖 中文释义 vt.vi. 使回交, (使)逆代杂交 🧩 词形变化 复数 backcrosses过去分词 backcrossed现在分词 backcrossing过去式 backcrossed第三人称单数 backcrosses 📘 English Definition(英文释义) v. mate a hybrid of the first generation with one of its parents ← backcrawl B 字母词表 backcross mating →