Backcrossed
v. 回[逆]交, 回交杂种( backcross的过去式和过去分词 )
🗣️ 情景例句
Whats your ring size?
你的戒指是几号的？
I know the boy whose father is a missionary.
我知道那个男孩的父亲是传教士。
They must keep their hands behind their backs.
他们得一直将手放在背后。