Her profound understanding of the subject earned her great respect.

profound 由前缀 pro-（表示"向前"）和词根 found（基础）组成，字面意思是"深入基础的"，引申为"深刻的、深奥的"。 profound understanding 指"深刻的理解"，表示对事物本质有深入把握的认知。