Backcrosses
v. 回[逆]交, 回交杂种( backcross的第三人称单数 )
🗣️ 情景例句
What's Harry doing tonight?
Harry，今晚做什么？
By doing we learn.
经一事，长一智。
At the far end of the lake, they came to huge piles of rubble which had been washed up by the water.
在湖的尽头，他们见到一大堆一大堆由湖水冲刷上岸的碎石。