听前提示 一、每期提供10个单词，每个单词都会有2-3个例句，方便理解记忆。 二、每个单词和句子都会重复5遍，其中第2遍为慢速，有助于识别。 三、本材料的整体难度较低，可以用来听力磨耳朵和单词查漏补缺。 Day 69 681. Disappear v.消失，不见；失踪；灭绝 He disappeared in the crowd. 他消失在人群中。 The sun has disappeared behind a cloud. 太阳消失在云后。 The forests are disappearing at an alarming rate. 森林正在以惊人的速度消失。 682. Disappoint v.使失望；使破灭，使落空 I didn't mean to disappoint her. 我不是故意让她失望的。 I know you won't disappoint me. 我知道你不会让我失望的。 In summary, this was a disappointing performance. 总之，这是一个令人失望的表现。 683. Disappointed adj.失望的，沮丧的；破灭的 v.使失望 He seemed disappointed at the results. 他似乎对结果感到失望。 I can assure you that you won't be disappointed. 我可以向你保证，你不会失望的。 The less you know about him, the less disappointed you are. 你对他的了解越少，你就越不失望。 684. Disappointment n.失望，沮丧；令人失望的人 She couldn't hide her disappointment. 她无法掩饰自己的失望。 Her disappointment was apparent to everyone. 她的失望对所有人来说都是显而易见的。 685. Disapproval n.不赞同，反对 He shook his head in disapproval. 他摇头表示不赞成。 They stare at my clothes with disapproval. 他们不以为然地盯着我的衣服。 686. Disapprove v.不赞成，反对；不批准，否决 I disapprove of what you say. 我不赞成你说的话。 Do you approve or disapprove of my project? 你赞成还是不赞成我的项目？ 687. Disaster n.灾难，灾害；;祸患 Earthquakes and floods are natural disasters. 地震和洪水是自然灾害。 If that accident had happened in a city, it would have caused a disaster. 如果那起事故发生在城市，将造成灾难。 688. Discipline n.纪律，风纪;惩罚v.惩罚，处分 Discipline is the bridge between goals and accomplishments. 纪律是目标和成就之间的桥梁。 Discipline is doing what you know needs to be done, even though you don't want to. 纪律是做你知道需要做的事，即使你不想做。 689. Discount n.减价，折扣adj.打折的v.打折，减价 Is there a student discount? 有学生折扣吗？ Can you give me a discount? 你能给我个折扣吗？ I bought the car at a 10%discount. 我以10%的折扣买了这辆车。 690. Discover v.发现，找到；了解到，发觉 What have you discovered? 你发现了什么？ Columbus discovered America in 1492. 哥伦布于1492年发现了美洲。 We discovered that our luggage had been stolen. 我们发现行李被偷了。