Backcrossing
v. 回[逆]交, 回交杂种( backcross的现在分词 )
✅ 同义词
🗣️ 情景例句
It is said that another suicide bombing occurred in the country yesterday.
据称，昨天在这个国家又发生了一起自杀式炸弹事件。
What is the highest mountain in this country?
这个国家最高的山是什么？
Is everyone here? asked Mother.
“都到齐了吗？”母亲问。