Backcrosses
v. 回[逆]交, 回交杂种( backcross的第三人称单数 )
🗣️ 情景例句
I want to send this letter to China, by air mail.
我想把这封信航空邮到中国。
He keeps on studying ecology.
他不断攻读生态学。
Kunta wondered why the white people had done this to him.
孔塔不知道白人为什么要这样对待他。