Backcrossing
v. 回[逆]交, 回交杂种( backcross的现在分词 )
✅ 同义词
🗣️ 情景例句
Sorry, but she is out for lunch right now.
抱歉，她现在出去吃午饭了。
Thank you! Same to you.
谢谢。你也一样。
Would you tell me your phone number?
你能告诉我你的电话号码吗？