They had been interested in thorium -- a radioactive element that can fuel nuclear reactors but not be processed into weapons.

VOA: special.2010.10.15

He says not only does arsenic belong under phosphorus, I predict that there is an element that lies below aluminum and above indium.

他认为不仅砷属于在磷下面，我预言还有一个元素,是在铝之上和铟的下边的。

麻省理工公开课 - 固态化学导论课程节选

When you are searching a list to see whether it has an element, you don't randomly probe the list, hoping to find whether or not it's there.

当我们在一个数组中,寻找目标元素的时候,我们不会随机的调查数组来看。

麻省理工公开课 - 计算机科学及编程导论课程节选

The nuclear deterrent is not the only element of America's commitment to the region, of course.

WSJ: U.S. Disarmament Is Dangerous for Asia

There are gaps in Marc's last movements and we have that 'not knowing' element.

BBC: Marc Williams death: Family appeal for information

The realtime, social web is clearly not a required element to organize and execute a high impact revolution.

FORBES: The Revolution Will Not Be Tweeted (Unless It Is)