他确实提供了一条线索。

He did provide one clue.

youdao

另一条线索与美国有关。

Another clue involves the United States.

youdao

这也许是条线索。

This could be a clue.

youdao

Already from the very opening lines we see in this a clue to the theme that is going to follow.

打从一开始,我们即看出这条线索,连系到即将发生的主题。

耶鲁公开课 - 政治哲学导论课程节选

It turned out there was no white van at all but in the first incident somebody saw a white van, this was reported in all the newspapers, then every other incident people started seeing the white van.

其实后来发现并没有白色小货车,但在第一起案件里有人看到白色小货车，所有报纸上都登了这条线索，结果在后来的案件中人们都看到白色小货车。

耶鲁公开课 - 心理学导论课程节选