Co-chair Richard Young. "We are hoping to send out a message to people in Darfur that there are people who still care, people who worry about them and people willing to work and take to the streets to support their needs and their cause."

VOA: standard.2010.05.23

But don't worry about these symbols don't worry about them too much.

但别担心这些象征,别太担心。

耶鲁公开课 - 现代诗歌课程节选

That's it. Again, these other p dxy dyz - or the d x y, d y z, those are going to be those more complicated linear combinations, you don't need to worry about them.

同样，这些p轨道,或者，它们是一些,很复杂的线性组合，你们，不用管它。

麻省理工公开课 - 化学原理课程节选