His brakes failed when he was driving down a hill.他在驱车下山时制动失灵。

　　  I put on the brake before the car knocked into the fire engine.我踏下了制动器才没有撞到救火车上。

　　vi. 刹车

　　  The taxi driver braked hard as the boy ran onto the road ahead of her.孩子跑到她前面的路上时那位出租车司机用力踩闸。

　　  He drove around the corner without braking.他没有刹车驶过拐角。

　　14. brand n. 品牌，商标

　　  What is your favorite brand of jeans? 你最喜欢什么牌子的牛仔裤？

　　  The company is developing a new brand of toothpaste.该公司在开发一种新品牌的牙膏。

　　15. burden n. 负担

　　  The old camel couldn’t carry the heavy burden.那头老骆驼驮不动那沉重的货物了。

　　  Do you find homework a burden? 你觉得作业是负担吗？

　　16. calculate v. 计算

　　  Have you calculated the cost? 你算花多少钱了吗？

　　  Scientists calculated when the spacecraft would return to the earth.科学家们推算飞船何时返回地球。

　　17. candidate n. 候选人

　　  Marie was the best candidate for the job.玛丽是干那个工作的最好的候选人。

　　  Was her husband one of the candidates in the election? 她丈夫是参加那次大选的候选人之一吗？

　　18. champion n. 冠军，优胜者

　　  Who’s the school chess champion? 谁是学校的象棋冠军？

　　  The French football team was the world champion in 1998.法国足球队是1998年的世界冠军

　　19. concentrate v. 集中

　　  If you don’t concentrate more on your work, you’ll be dismissed! 你要是还不全神贯注做好你的工作就会被解雇！

　　  Can you concentrate on your studies with the music going on? 放着音乐你能够把精力集中到学习上吗？

　　20. conflict n. ①争论，争吵

　　  The two political parties are now in conflict on foreign policies.两个政党现在就外交政策展开争论。

　　  He works with both companies and there is obviously a conflict of interest.他在两家公司任职因此很显然会有利益的矛盾。

　　  ②斗争，冲突

　　Armed conflict could start at any time in that area.那一地区随时会发生武装冲突。

　　  Is there a possibility of a serious conflict between the two nations? 那两国之间有可能发生严重的冲突吗？

　　21. constant adj.经常的，不断的

　　  I don’t like the constant arguments with you.我不喜欢跟你没完没了的争论。

　　  Change is constant in history.历史上变化是不断的。

　　22. creature n. animal or being of some kind动物，生物，人

　　  Did you go to the show of the photos of some creatures from outer space? 你去看来自外空生物的照片展览了吗？

　　  That poor creature had no family at all.那个可怜的家伙根本没有家。

　　23. debate n.讨论，辩论

　　  A public debate about that is suggested.有人建议就此展开公开讨论。

　　  There has been much debate about the effect of the medicine.关于这种药物的疗效还有很多争议。

　　v. 讨论，辩论

　　What are the two sides debating about? 他们双方在为什么辩论？

　　  The future of the nuclear industry will be debated in government soon.核工业的未来不久就要在内阁讨论。

　　24. decorate vt. 装饰----，修饰----

　　  She brought some beautiful pictures to decorate the walls of her room.她带来一些漂亮的图画来装饰房间的四壁。

　　  We’re decorating the kitchen again this autumn.我们秋天要重新装修厨房。

　　25. decrease v. 减少，减轻，减弱

　　  The corporation decreased the number of workers.那家公司裁减了员工。

　　  Interest in the game is decreasing.人们玩那种游戏的兴趣渐渐消退。

　　26. delete v. 删去

　　  If you delete 80 words, we can put the whole passage on two pages.如果你删去80字，我们就可以将这一整篇文章放在两页纸上了。

　　  Why did you delete his name from the list? 你为什么把他的名字从名单中删掉了？

　　27. differ v. 相异，有区别

　　  On the right stand rows of big houses differing one from another in the color of their front door.右边耸立着一排排大房子，只是他们的前门颜色不一样。

　　  The climate in the south differs from that in the north.南方的气候与北方的迥然不同。

　　28. digital adj.数字的，数码的

　　  We’re now in digital times.我们现在身处数码时代。

　　  My wife prefers to buy a digital camera.我妻子更想要架数码相机。

　　29. discount n. 折扣

　　  Teachers and soldiers get a discount of 25% on airfares.教师和军人乘坐飞机票价可打25%的折扣。

　　  The vests are $1 each but if you buy a dozen, we’ll give you a 20% discount.背心一美元一件，但你如果要买一打，我们就给你20%的折扣。

　　30. disk=disc n. 磁盘

　　  The disk was completely destroyed.磁盘已经彻底坏了。

　　  She found some of her computer discs missing the next day.第二天她发现几张电脑软盘不见了。

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