那个强盗挥舞着一根粗短的棍棒威胁路人。

The robber threatened passersby with a thick ___cudgel.

警察不得不制服那个暴力男子以阻止他。

The policeman had to ___subdue the violent man to stop him.

为了想起密码，我绞尽了脑汁。

I had to ___cudgel my memory to recall the password.