那位哲学家提出了一个关于存在本质的深刻问题。

The philosopher asked a ___profound question about the nature of existence.

虽然她的解释很简洁，但却异常深刻。

Although her explanation was concise, it was remarkably ___profound.

她对该学科深刻的见解为她赢得了极大的尊敬。

Her ___profound understanding of the subject earned her great respect.