"Too much cross linking reduces elasticity and makes the skin stiff and rigid, and these are the conditions that encourage wrinkled skin," Werman said in a statement.
沃曼在一次报告中说：“太多的交叉相联'就会使皮肤降低弹性，发生硬化，这是导致皮肤起皱纹的原因。”
Complementary goods have a negative cross elasticity of demand.
互补商品的需求的交叉弹性为负数。
The demand is affected by price and income, classified as price elasticity of demand, income elasticity of demand and cross elasticity of demand.
需求受价格和收入变动的影响，可以分为需求价格弹性、需求收入弹性、需求交叉弹性。
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