By-product
01
副产品, 意外结果
something that happens incidentally and unexpectedly as a result of something else
例子
The clean energy project produced hydrogen as a by-product of the main process.
清洁能源项目作为主要过程的副产品生产了氢气。
02
副产品, 衍生品
a product made during the manufacture of something else
