a part of an aircraft’s wing that can be raised in order to interrupt the flow of air over it and so slow the aircraft’s speed （机翼的）扰流片 
a raised part on a fast car that prevents it from being lifted off the road when travelling very fast （汽车的）气流偏导器 - (especially North American English)
a candidate for a political office who is unlikely to win but who may get enough votes to prevent one of the main candidates from winning 选举中的搅局者（无望获胜但所得选票可能使某主要候选人无法当选） a person or thing that intends or is intended to stop somebody/something being successful 阻碍…成功的人（或事物）；搞砸…的人（或事物） information that you are given about what is going to happen in a film, television series, etc. before it is shown to the public （在电影、电视剧等公映前的）剧情透露 In the final episode (spoiler alert) he gets shot. 在最后一集中（剧透警报），他被枪杀。 Warning: this review contains spoilers. 警告：此评论包含破坏者。
a news story, book, etc. that is produced very quickly in order to take attention away from one produced by a competitor that appears at the same time （为竞争而迅速发表的）抵消影响的报道（或书籍等） The paper ran a spoiler. 报纸碰到了一块东西。