1. In this part of the cave, they could hear an insistent booming sound .
    在洞穴的这块地方，他们能够听到持续的轰响.

2. I did not want to go , but she was insistent.
    我不想去，可她坚持要我去。

3. In this part of the cave, they could hear an insistent booming sound
    在这儿，他们可以听见一种连续不断的轰鸣声。