And again, I want you to have practiced drawing these out in the form you always need to start with the sigma and then write the number of the orbital.

同样的，我希望你们,练习画这种图,你总是要从sigma开始,然后写出轨道数目。

麻省理工公开课 - 化学原理课程节选

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The Liverpool Tate gallery has mounted an exhibition devoted to the form, drawing hitherto unsuspected connections between it and the work of artists like David Hockney and Andy Warhol (about whom Mr. Bowie wrote a song).

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But even in draft form the proposal is drawing criticism from abortion-rights groups, who suggest it is an effort by abortion foes within the administration to create legal recognition for the fetus.

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