名詞 hindsight:

1. understanding the nature of an event after it has happened

1. I now know with hindsight that I made a mistake.
   我事后才明白自己犯了一個錯誤。
2. I am able to attempt a judgment with the benefit of hindsight.
   我借助事后的認識才得以做出判斷。

hind.sight

n.（名詞）
Perception of the significance and nature of events after they have occurred.
后知之明：在事情發(fā)生后對于事情的性質(zhì)、重要性的認識
The rear sight of a firearm.
槍的表尺，后瞄準器