Backcross
vt.vi. 使回交, (使)逆代杂交
✅ 同义词
🗣️ 情景例句
I've thought about that for some time.
我已经想过一阵子了。
I've been looking forward to visiting your factory.
我一直都盼望着参观贵厂。
A man who had broken his right leg was taken to hospital a few weeks before Christmas.
圣诞节前几周，某人摔断了右腿被送进医院。