该公司从加拿大和美国的餐馆、学校和购物中心收集用过的筷子，并将它们制成家具和其他艺术品。

The company collected used chopsticks from restaurants, schools and shopping centers in Canada and the US and turned them into furniture and other artworks.

youdao

玛格丽塔酒是我至今饮用过的最好的酒了。

The margarita was the best I have ever had.

《柯林斯英汉双解大词典》

用过的东西要放回原处！

If you use something, put it back!

《牛津词典》

I used it so that they could record all of the books that they read about Japanese culture.

我用它是为了让孩子们能记录下,他们读过的所有有关日本文化的书。

麻省理工公开课 - 媒体、教育、市场课程节选

And we can calculate that with the formula that we used, which was just n minus l minus 1 equals the number of nodes.

这个我们可以用我们以前用过的那个公式来计算，也就是节点数等于ｎ减去ｌ减去１

麻省理工公开课 - 化学原理课程节选

That will lead me to use a technique I mentioned again last time, called memoization.

这就使得我要是,用我上次提过的一种技术，也就是默记法。

麻省理工公开课 - 计算机科学及编程导论课程节选