Backcrosses
v. 回[逆]交, 回交杂种( backcross的第三人称单数 )
🗣️ 情景例句
She went to a school-board meeting.
她去参加联合校董会会议了。
The more a man knows, the more he see his ignorance.
大智若愚。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？