byproduct

/ˈbaɪprɑdəkt/

a secondary and sometimes unexpected consequence

Chinese meaning: 副产品；附带结果

The increase in traffic is an unfortunate byproduct of urban development.

交通量的增加是城市发展的一个不幸的副产品。

Honey is a valuable byproduct of beekeeping, not just beeswax.

蜂蜜是养蜂业的一种有价值的副产品，而不仅仅是蜂蜡。