Retroactivity
n. 追溯既往\\n[法] 溯及既往, 追溯效力
🗣️ 情景例句
It hurts, doesn't it?
会痛 ，是不是？
It's faster to go by plane than by boat.
和坐船比，坐飞机是更快的。
I felt sure I would never be able to close the case again.
我相信那箱子再也关不上了。