a penetrating mind的用法和样例：
- He has a penetrating mind.
- In reality, he had a penetrating mind and was more of a thinker than appeared to view.
- It is always considered that yellowish things tend to be veiled by the age, which turns a penetrating mind into a muddy one.
- He made a penetrating analysis of the problem.
- He examined the man with a penetrating gaze.