最令人担忧的是存放在3号和4号反应堆的用过的核燃料棒。

Of greatest concern are the spent fuel rods stored at reactor Nos. 3 and 4.

youdao

多年来，苏联海军向海里倾倒核废料，其中包括一些在未公开的地点遗弃的用过的潜艇反应堆。

For years, the Soviet navy released nuclear waste into the sea, including several spent submarine reactors that were dropped overboard at undisclosed locations.

youdao

大多数囚犯都在人生的某个阶段服用过毒品。

Most of the inmates have used drugs at some point in their lives.

《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