incidental
🇺🇸
/ˌɪnsɪˈdentl/
🇬🇧
/ˌɪnsɪˈdentl/
happening along with something else but not the main part
The extra cost was incidental to our main purchase.
额外费用是我们主要购买附带发生的。
happening as a natural result
The noise is incidental to living in a busy city.
噪音是生活在繁忙城市的自然结果。
a small extra thing that happens along with something else
We budgeted for travel incidentals like snacks and souvenirs.
我们为旅行中的附带小物如零食和纪念品做了预算。