If an action or event has repercussions, it causes unpleasant things to happen some time after the original action or event.
例句
It was an effort which was to have painful repercussions...这么做会带来极坏的负面影响。Members of congress were warned of possible repercussions if their vote went through.国会议员被警告如果他们的投票通过可能会带来不良影响。