Thirteen won gold medals. Britain,which will host the Summer Olympics in London in 2012, won only one medal, a gold by Amy Williams in women's skeleton.

VOA: standard.2010.03.01

So our skeleton tells us that carbon is in the middle, so we'll put the h on one side, and the n on the other side there.

我们的骨架告诉我们碳原子应该放在中间，因此我们把氢原子放在一边，把氮原子放在另外一边。

麻省理工公开课 - 化学原理课程节选