Backcrosses
v. 回[逆]交, 回交杂种( backcross的第三人称单数 )
🗣️ 情景例句
What are you going to do about your appointment
那怎么办
Dad is building another room onto the back the house.
爸爸另外在屋子的后面盖一个房间。
They are too high. Be careful, Jim! It's dangerous.
它们太高了，小心，吉姆！那很危险。