A light breaks in upon

• 恍然大悟

A light breaks in upon的用法和样例：

例句

1. Then swiftly the matter became clear in his mind.
   跟着他猛地恍然大悟啦。
2. And each said something in his own way and all understood.
   每个人都按自己的理解发表着议论，都恍然大悟了。