incidental

附带的；偶然的；容易发生的英释中释adjhappening or existing in connection with something else that is more important

附带事件；偶然事件；杂项中释n

1 incidental music,配乐（戏剧、电影等）

1 Increased motivation is more than an incidental benefit of reward schemes..积极性提高不仅仅是奖励计划附带的益处。