Getting back to the concept that there are good and bad fats, if we look at the left hand side here, is a table or a graphic showing the fats that tend to have beneficial impacts on health.

回到之前的观点,脂肪有坏有好,看向左边,这是个表格或者说图表,上面展示了对我们身体有益的脂肪

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

sigma That is one pi orbital. There is one sigma, one pi and there is a second pi, and that is how we are getting the triple bond.

那是一个pi轨道，有一个，一个pi，还有第二个pi轨道，这就是我们如何得到三线态的。

麻省理工公开课 - 固态化学导论课程节选