Retroactivity
n. 追溯既往\\n[法] 溯及既往, 追溯效力
🗣️ 情景例句
But first in the school-rooms.
但首先是在教室 。
Did you see him yourself?
你自己亲自看到他吗？
So, in an earthquake, the earth shakes.
因此，地震时，地球震动。