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By-product
01
副产品, 次级产品
something that happens incidentally and unexpectedly as a result of something else
Example
The fermentation process yields alcohol as a by-product.
The clean energy project produced hydrogen as a by-product of the main process.
Increased efficiency was a welcome by-product of the new manufacturing technique.
02
副产品, 次级产品
a product made during the manufacture of something else
