thereupon

1. ADV Thereupon means happening immediately after something else has happened and usually as a result of it. 隨即; 於是[正式] [ADV with cl]

Some months ago angry demonstrators mounted a noisy demonstration beneath his window. His neighbours thereupon insisted upon more security. 幾個月前，憤怒的示威者在他窗下發起了喧閙的抗議活動。隨後他的鄰居們就堅持要加強安保措施。