1. accumulate [əˈkju:mjəleɪt]
vt.堆积，积累，积聚；vi.累积，聚积
to collect a large number of things over a long period of time
参考例句：
1. We let the mending accumulate until Wednesday. 我们让需缝补的衣服一直积存到星期三。
2. We should try various channels to raise and accumulate social security funds. 我们应该尝试多渠道筹集和积累社会保障基金。
2. session [ˈseʃn]
n.会议，开庭期，市盘，学期；adj.短期的
a formal meeting or series of meetings of an organization such as a parliament or a law court
参考例句：
1. This matter will go over until the next session. 这件事将留待下次会议讨论。
2. Congress is now in session. 国会现在正在开会。
3. delete [dɪˈli:t]
vt.删除文字，擦去(字迹)
to remove or draw a line through something, especially a written word or words
参考例句：
1. If you delete 50 words,we can put the whole story on one page. 如果你删掉50个字，我们可以把整篇报道安排在一个版面上。
2. I selected a file and pressed the Delete key. 我选定了一个文件，按下了删除键。
4. boast [bəʊst]
vt.自夸；以拥有…而自豪；吹嘘；vi. 自吹自擂；n.自吹自擂
to speak too proudly or happily about what you have done or what you own
参考例句：
1. It is nothing to boast of. 这没有什么可夸耀的。
2. Talent is his boast. 他以有才自豪。
5. mayor [meə(r)]
n.市长
a person who is elected or chosen to be the leader of the group who governs a town or city
参考例句：
1. The new mayor said he would clean the city up. 新市长说，他要整顿本市。
2. The mayor hurried into his office, brushing off the reporters. 市长赶快走进办公室，拒不接见记者。
6. detective [dɪˈtektɪv]
adj.侦察(用)的；n.侦探
someone whose job is to discover information about crimes and find out who is responsible for them
参考例句：
1. I enjoy reading detective stories. 我爱读侦探小说。
2. He wrote detective stories for magazines. 他给杂志写侦探故事。
7. invade [ɪnˈveɪd]
vt.侵略，侵犯；闯入，侵扰；vi.侵略；侵入；侵袭；侵犯
to enter a country by force with large numbers of soldiers in order to take possession of it
参考例句：
1. I don't want to invade your private life unnecessarily. 我不想过多地干涉你的私生活。
2. He ordered the army to invade at dawn. 他命令军队在拂晓入侵。
8. amid [əˈmɪd]
prep.在…中间，在…之中，被…围绕
in the middle of or surrounded by; among
参考例句：
1. The government collapsed amid budget quarrels. 政府因预算问题争吵不休而倒台。
2. This book was written amid many difficulties. 这本书是在困难重重中写成的。
9. respectively [rɪˈspektɪvli]
adv.各自地，独自地，个别地，分别地
in the order given;
参考例句：
1. They finished first and second respectively. 他们分获一二名。
2. In this machine which items make up the software and the hardware respectively? 在机器中，哪几项分别构成软件和硬件？
10. widen [ˈwaɪdn]
vt.&vi.(使)扩大；(使)变宽
to become , or to make something greater in width
参考例句：
1. We should widen the opportunities for adequate medical care. 我们应当使得到适当医药救护的机会更为扩大。
2. When are they going to widen the streets? 他们打算什么时候把这些街道加宽？
11. collision [kəˈlɪʒn]
n.碰撞；(利益，意见等的)冲突，抵触
an accident that happens when two vehicles hit each other with force
参考例句：
1. The car was wrecked by its collision with a big lorry. 这辆小轿车是由于和大卡车相撞而碰毁的。
2. This collision had a very unusual cause. 这次冲突有着非同寻常的原因。
12. restrict [rɪˈstrɪkt]
n./vt.限制，限定，约束
to limit the movements or actions of someone, or to limit something and reduce its size or prevent it from increasing
参考例句：
1. He feels this new law will restrict his freedom. 他觉得这一新法律会限制他的自由。
2. Don't restrict her proper activities.不要拘束她的正当活动。
13. thrust [θrʌst]
vt.延伸，挺伸；猛推，猛塞，把...插入；vi.插入；用向某人刺去；猛然或用力推
to push suddenly and strongly
参考例句：
1. They thrust themselves into the house. 他们闯进了这间屋子。
2. They thrust their way through the dense crowd. 他们挤过密集的人群。
14. recovery [rɪˈkʌvəri]
n.恢复，痊愈；追回，寻回，收复
the process of getting back something lost , especially health , ability , possessions,
参考例句：
1. The doctors said that his recovery was a miracle. 医生说他的复原是个奇迹。
2. The quick recovery was truly in response to medication. 这次迅速康复确实是对药物治疗的反应。
15. inward [ˈɪnwəd]
adv.向内，在内；adj.向内的，在内的，里面的
on or towards the inside
参考例句：
1. I understand your inward thoughts. 我了解你内心的思想。
2. I sighed with inward relief. 我心里舒了一口气。
16. prohibit [prəˈhɪbɪt]
vt.禁止；阻止，使不可能
to officially forbid (= refuse to allow ) something
参考例句：
1. Laws must be put through to prohibit this act. 必须通过法律来制止这种作法。
2. Swimming after drinking is strictly prohibited. 严禁酒后下水。
17. extension [ɪkˈstenʃn]
n.伸长，扩大，伸展；延长，延期；延长部分，扩大部分；电话分机
when something reaches , stretches or continues ; when you add to something in order to make it bigger or longer
参考例句：
1. The pupils disliked the extension of the term. 小学生们不愿延长学期。
2. Our extension is nearly finished. 我们的扩建部分已接近完工。
18. secure [sɪˈkjʊə(r)]
adj.无虑的，安全的；牢靠的，稳妥的；vt.固定，获得，使...安全；vi.(海上工作人员)停止工；(船)抛锚，停泊
positioned or fixed firmly and correctly and therefore not likely to move , fall or break
参考例句：
1. He found a secure foothold and pulled himself up. 他找到了一个稳固的踏脚处并爬了上去。
2. Extra men are needed to secure the camp against attack. 需要增加兵力以保护军营免受攻击。
19. crucial [ˈkru:ʃl]
adj.极重要的，决定性的，关键性的
extremely important or necessary
参考例句：
1. It's a crucial decision. 这是一个极其重要的决定。
2. The foreign market was increasingly crucial. 国外市场越来越重要了。
20. conquer [ˈkɒŋkə(r)]
vt.克服，征服，战胜，占领；vi.得胜
to take control or possession of foreign land , or a group of people , by force
参考例句：
1. There is always one thing to conquer another. 一物降一 物。
2. Will can conquer habit. 意志能战胜习惯。