She shook a little bell on the table, and a small black girl about 12 years old ran into the room.

VOA: special.2009.01.17

And en route we discovered that we can divide the Periodic Table into metals, 75% which is about 75% of the Periodic Table.

我们发现,我们能够将元素周期表划出金属，大概占。

麻省理工公开课 - 固态化学导论课程节选

if we think about electronegativity as a periodic trend we can just draw our nice periodic table here, and let's separate it into quadrants.

如果我们来思考一下电负性的周期性规律,我们可以把我们漂亮的周期表画在这，然后把它分成四个象限。

麻省理工公开课 - 化学原理课程节选

He laid his arms upon the table's edge and dropped his face into them, tearless and very sleepy.

VOA: special.2009.10.31

5% And, it turns out that about 75% of the periodic table falls into this category.

而且，它表明元素周期表的,都属于这个种类。

麻省理工公开课 - 固态化学导论课程节选

Soon after he had finished his work he sank into a chair by the side of the table upon which the body lay.

VOA: special.2011.02.26

So here we're talking about how food comes to the table. what happens just materializing it into fish sticks. We didn't just go out to the river and poured out the fish sticks.

因此在这我们将探讨食物的制作过程,什么让鱼变成冻鱼条,并不是可以去河里,把冻鱼条直接倒出来。

麻省理工公开课 - 媒体、教育、市场课程节选

Twenty-four-year-old John Dolan of Florida is in second place going into the final table in November.

VOA: special.2010.07.26

So, remember when you're looking at your periodic table, don't forget about the lanthanides, sometimes they come into play.

因此，要记住，当你在看元素周期表时，不要忘了镧系元素，有时候也会用到它们。

麻省理工公开课 - 化学原理课程节选

This year a twenty-two-year-old from Quebec,Canada, is the leader going into the final table.

VOA: special.2010.07.26

And we group the students into subgroups at that table, three students in a group.

我们再将一桌学生分成更小的组,三人一组。

麻省理工公开课 - 媒体、教育、市场课程节选

The one problem that we run into is as we go to more and more atoms on the table, as we add on electrons, the Schrodinger equation is going to get more complicated.

我们将会遇到的一个问题,是当我们处理周期表中越来越多的原子时，当我们增加了电子，薛定谔方程,变得愈加复杂。

麻省理工公开课 - 化学原理课程节选