Backcross
vt.vi. 使回交, (使)逆代杂交
✅ 同义词
🗣️ 情景例句
You're just wasting your breath.
你在白费口舌。
Riff raff!
痞子！
All machines are slightly different, so you need a short lesson when you start work in a new office.
所有的机器都稍微有些不同，所以当你新到一个办公室开始工作时，你需要进行短期培训。