It's helpful to understand concepts like marginal analysis and elasticity.

理解边际分析和弹性这样的概念很有帮助。

It's responsible for much of those muscles' elasticity and structural integrity.

它很大程度上决定了这些肌肉的弹性和结构完整性。

Even at rock bottom prices, price elasticity only goes so far.

即使票价已处最低点，也非常低。

With emphysema, the lung loses its elasticity, so it gets like this grocery bag.

肺气肿使肺失去弹性，就像这个购物袋。

For the first time, we can have elastomers that are high elasticity or high dampening.

这第一次，我们可以弹性或阻尼系数的弹性体。

Now there's also elasticity of supply.

还有供给弹性。

It has to do with substitutes and what economists call elasticity of demand.

这与替代品和经济学家所谓的需求弹性有关。

And finally, your body has places that require more elasticity than rigidity, like say, around your joints.

最后，你的身体有些地方需要更多的弹性而性，比如，在你的关节周围。

Golesworthy has Marfan syndrome, a genetic condition affecting the strength and elasticity of connective body tissues, including blood vessels.

尔斯沃西患有马凡氏综合症，这一种影响结缔组织（包括血管）强度和弹性的遗传病。

Photoaging from chronic sun exposure leads to a loss of elasticity in the skin, in other words, making it look saggy.

长期暴晒在阳光下会导致皮肤失去弹性，或者说，使皮肤看上去下垂。

So you want them, there to be some elasticity.

因此，你希望双方之间能有一定的灵活性。

Stockings were typically shear and made of nylon, which greatly improved elasticity.

长袜通常剪羊毛的，由尼龙成，弹性大大提。

And the quality of the elasticity is what we call " surface tension."

弹性的质量就我们所说的“表面张力” 。

The skin then swells, before contracting to about half the size of its normal elasticity.

然后皮肤膨胀， 然后收缩到其正常弹性大小的一半左右。

High amounts of collagen are important for youthful-looking skin, boosting its elasticity and firmness.

含量的胶原蛋白对于保持肌肤年轻态至关重要，它能提升皮肤的弹性和紧致度。

The elasticity of demand is its responsiveness to changes in another factor, such as price.

需求弹性指其对另一个因素变化的反应程度，如价格。

Elasticity of demand quickly became one of the most widely used tools of economic analysis.

需求弹性很快成为经济分析中最常用的工具之一。

And then you do mathematical inversion to see what the elasticity is.

然后你进行数学逆运算来确定弹性多少。

Their elasticity in the muscles is perfect.

他们的肌肉弹性堪称完美。

Also, estrogen can help facilitate brain activity, skin elasticity.

此外，雌激素还能促进大脑活动，提皮肤弹性。