我找不到我的书—到处都找遍了。

I can't find my book—I've looked everywhere.

《牛津词典》

我找不到我的钥匙。哦，原来在这里。

I can't find my keys. Oh, here they are.

《牛津词典》

我把口袋里的东西都掏了出来，仍然找不到我的钥匙。

I emptied out my pockets but could not find my keys.

《牛津词典》

You'll find nothing comparable in Russia, obviously which I'll come back and talk about, or in Prussia, or in France.

而你在俄国却找不到类似的方式,很显然我在讲到普鲁士或法国,那章时也将回顾并谈到这一问题

耶鲁公开课 - 欧洲文明课程节选

My assistant will tell you that she often cannot find me because my favorite thing is to escape and just wander around the institution.

我的助手会告诉你,她常常找不到我,因为我最爱做的事情就是,“逃出”办公室，到医院里到处巡视。

普林斯顿公开课 - 领导能力简介课程节选

So remember last time I put up the article by the Crimson that was unfortunately I couldn't find ? a more recent one-- that was 2004?

记得上次,我提出的《哈佛克里姆森》杂志里的文章,很可惜我找不到,更近期一点的，那是2004年的？

哈佛公开课 - 幸福课课程节选