"The remaining 88 percent of the variation from one center to another are unmeasured factors, that we don't quite know what those factors are."

VOA: standard.2010.07.14

Every culture is going to have Pan Am smiles, happiness smiles, coy smiles, but the variation of that sort is something which will vary as a result of how you're raised and the people around you.

每一种文化都有问候式微笑，开心的微笑，腼腆的微笑，不同还在于,你是怎么被抚养大，你身边人如何。

耶鲁公开课 - 心理学导论课程节选

So, instead of having the periodic variation of water, or the periodic variation of air density here we're talking about an electric field.

不像水或者空气密度的,周期变化，我们这里,讨论的是电场。

麻省理工公开课 - 化学原理课程节选

Yeah. Absolutely. A lot of emphasis, a lot of variation in tone, and the italics are part of the representation of that.

对，绝对是的，很多的强调，很多语气上的变化，而斜体字就是它的表示方法之一。

耶鲁公开课 - 1945年后的美国小说课程节选

The water soluble vitamins tend to be used more immediately by the body not stored and excreted through the urine if consumed in excess, so the body can tolerate more variation in intake of these before you start getting toxicity than is the case with the vitamins on the right.

而水溶性维生素往往都立刻被身体所利用,不会被机体储藏,过剩部分由尿液排出,因此机体耐受过量水溶性维生素的能力,相比起右边这栏里的脂溶性维生素,可是要强得多了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So, for example, we have this average level, and then it can go high where we have the peak, or it can go very low. We can also discuss sound waves, so again it's just the periodic variation of some property -- in this case we're talking about density, so we have high density areas and low density areas.

例如这是平均位置，在峰的位置水位高，在谷水位低，我们也可以,讨论声波它也是某种,量的周期变化，在这里我们,讨论的是密度,我们有高密度区和低密度区。

麻省理工公开课 - 化学原理课程节选