听到这些话时，他感到自己内心的怀疑消失了。
When he heard these words, he felt his inner doubts melt away.
我们征服的不是大自然，而是自己内心的怀疑和恐惧。
We are not conquering nature, but the doubts and fear in our hearts.
我对此真的非常抱歉，我有内心的怀疑已经有一段时间了。
I am really very sorry about this, but I have been having my internal doubts for some time now.
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