by-product

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Even though leather is used so much today, it is only a by-product.
虽然皮革在今天被如此广泛的使用，但是这只是个副产品。
Technologies do exist to manufacture propylene as an end in itself, rather than as a by-product.
科技确实可以将丙烯自身当作最终产物而不是作为一种副产品来制造。
Dealing with information overload has become a by-product of living in a digital age and the problem won’t go away fast.
处理过量的信息已经成为生活在数字化时代的一个副产品，而问题并没有因此而解决的更快。

And the economy has been hit hard by the fall in the price of diamonds which make up one-third of its gross domestic product.
So Firm 2--if Firm 2 produces all the way up to here then any product produced by Firm 1 is going to push prices even lower.
如果公司2的产量一直增加到这里,那么公司1的每一件产品必须降价出售
耶鲁公开课 - 博弈论课程节选
By linking the goal to its gross national product rather than setting an absolute emissions target, China - the world's largest emitter of greenhouse gases may actually see its total emissions increase over the next decade, even if it meets the voluntary target.

But if Green happens to be a by-product of eating healthful food, all the better.
FORBES: Green Greens versus Red Greens

something that is produced as a result of making something else, or something unexpected that happens as a result of something

A byproduct is something that is produced during the manufacture or processing of another product.

副产品
By this way, we can well protect the environment while enhancing the economic welfare. In fact, the "by-product exchange" is an important application.
实际上，副产品交换是应用工业生态学时最常用的战略。
付产品
不产品
连产品

副产物
Utilization status of chicken feather,chicken skin,chicken blood,chicken manure at home and abroad were introduced in this paper. Nutritional characteristics of each by-product and structural features were discussed.
介绍了国内外鸡毛、鸡皮、鸡血和鸡粪的综合利用状况,论述了各副产物的结构特点和营养特性。
生物学
副产品