He penetrated our thoughts.

了我们的心思。

He penetrated into the secret.

了这个秘密。

A member of the Gestapo visited the brothel the next day in the guise of an ordinary client, but fortunately the manageress saw through his cover.

第二天，一个盖世太保扮普通嫖客来到妓院，幸而母了的身份。