I didn't think anything of it at the time—but it turned out to be the clue that would solve the case.当时我认为这个并不重要，结果却发现这是破获这一案件的线索。

I didn't think anything of his wearing a long coat since it was cold outside.我觉得他穿长大衣没什么可奇怪的，因为外面很冷。