比如,下图中的字幕为:when the local goverment stepped in to protect them。短短一条字幕,我们便可以学到三个不错的词汇local government: 当地政府protect: 保护;为某人买保险step in: 干预以上词汇中尤属step in最难掌握,其柯林斯释义为:PHRASAL VERB If you step in, you get involved in a difficult situation because you think you can or should help with it. 干预例句:If no agreement was reached, the army would step in. 如果达不成协议,军队将会干预。单独靠词典背诵不免太枯燥,如果搭配纪录片观看,岂不是语境更丰富,而且搭配画面记忆,说不定再碰到step in你能立马想起画面中的受保护鸟类,瞬间即可想起对应词义。心动了吗?抓紧学起来!