Backcrossing
v. 回[逆]交, 回交杂种( backcross的现在分词 )
✅ 同义词
🗣️ 情景例句
Donald passed away a couple of years ago.
Donald几年前去世了。
It's only a matter of time.
这只是时间问题。
Yes, of course. It's very easy.
那当然。煮它（豆腐）并不难。