At the time, his appointment seemed a stroke of genius.

当时，他的任命似乎是天才之举。

Her idea was a stroke of genius.

她的主意是聪明的一着。

Your idea was a stroke of genius.

你的主意很高明。

That's a pure stroke of genius.

那是很聪明的一招。

With a stroke of genius, whiteout was invented.

在一个灵感下，立可白被发明了。