Backcross
vt.vi. 使回交, (使)逆代杂交
✅ 同义词
🗣️ 情景例句
Really. I didn't like math.
真的。我不喜欢数学。
And our successful techniques, and to speak about our failures.
和成功技巧，并讲出我们的失败之处。
He was a sleek, short man with a bright bald-head, pink face, and gold-rimmed glasses.
他身材矮小，穿着时髦，头光秃，面粉红，戴一副金丝边眼镜。