深刻

例句：

1. 1. The novel is so profound that it has left a lasting impression on me.
   这部小说如此深刻，给我留下了深刻的印象。
2. 2. He spoke with such profound insight that everyone was impressed.
   他说话非常深刻，每个人都印象深刻。
3. 3. His explanation of the complex issue was profound and made sense.
   他对复杂问题的阐述非常深刻且合情合理。