互补商品的需求的交叉弹性为负数。
Complementary goods have a negative cross elasticity of demand.
正式的表述是，对于给定的物品X，互补品是指那些一旦被消费会便会增加X的价值的商品。如此，计算机的使用增加了如打印机和显示器这样的外围设备的价值。
Formally, for a given good X, acomplement is a good whose consumption increases the value of X. Thus, the use of computers increases thevalue of peripheral devices like printers and monitors.
一件商品的互补品价格上涨会增加了对于该商品的需求，相反的，一件商品的互补品价格下降会减少该商品的需求。
An increase in the price of a substitute increasesthe demand for a good, and conversely, a decrease in the price of a substitutedecreases demand for a good.
商务部发言人姚健周三说，中美两个经济体有高度的互补性，并保证通过进口更多美国商品来提升双边经济关系。
Yao Jian, the Ministry of Commerce spokesman, said on Wednesday the two economies are highly complementary and pledged to boost bilateral economic ties by purchasing more goods from the US.
文化艺术如同商品一样，有着很强的流通性、互补性。
Like merchandise, culture and art are circulative and can supplement each other.
文化艺术如同商品一样，有着很强的流通性、互补性。
Like merchandise, culture and art are circulative and can supplement each other.
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