Backcrossing
v. 回[逆]交, 回交杂种( backcross的现在分词 )
✅ 同义词
🗣️ 情景例句
Aren't you hungry, Harry?
你不饿吗， Harry？
He that converses not knows nothing.
不和人交谈的人一无所知。
Even if you travel in ideal weather, sea journeys take a long time.
即使风平浪静，坐船旅行也要占用很长时间。