incidental
美[ˌɪnsɪˈdɛntl:] n.附带事件；伴随事件，杂费；非主要的附带项或费用
网络偶然的；非主要的；附带的；偶发的
1 . The discovery was incidental to their main research.
这一发现是他们主要研究中的附带收获。
来自《权威词典》
2 . Keep this money for your incidental expenses.
这点儿钱,你留着零花吧.
来自《现代汉英综合大词典》
3 . At the bottom of the bill, you will notice various incidental expenses such as faxes.
在账单底部，你会发现有传真等各项杂费。
来自柯林斯例句
4 . We were able to stick to the main issue without incidental grievances being dragged in.
没有了附带扯进去的牢骚话，我们就能够紧扣主题。
来自柯林斯例句
5 . The playing of music proved to be incidental to the main business of the evening.
音乐演奏成了当晚唱主角的商业活动的陪衬。
来自柯林斯例句
1.(frequently plural) an expense not budgeted or not specified;
he requested reimbursement of $7 for incidental expenses
2.an item that is incidental
3.(sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence;
incidental expenses
4.following as a consequence;
an excessive growth of bureaucracy, with related problems
5.not of prime or central importance;
nonessential to the integral meanings of poetry- Pubs.MLA