1. decision决定

　　Specilist advice is available to help you choose the most suitable breed of dog, but in part, the decision depends on common sense.

　　2. decline下降 减少 衰退 谢绝 拒绝

　　The major reason for the decline of Asian elephants is the loss of their forests.

　　3. decorate装饰 装潢 修饰

　　It is better to reside in a bad part of town, I think, than not to live the house at all, or they buy an old house,and redesign it, then decorate it with old style furniture.

　　4. decrease减少 (减少)量

　　Schools that show a decrease in deliberate destruction of property can receive the

　　amount of money, that would be spent on repairs and replacements.

　　5. definite明确的 确切的 一定的 肯定的

　　I am sorry, madam, the plane is somewhat behind the schedule, take a seat, I will

　　inform you as soon as we know something definite.

　　Thank you, I’d rather look around, and I will be back in several minutes.

　　6. definitely明确地 肯定地 [口]的确

　　You’re a fantastic teacher that definitely tought me a lot about reasoning.

　　7. deliberate故意的 深思熟虑的 仔细考虑

　　A chemical attack is the deliberate release of toxic gas, liquid or solid that can poison people and the enviroment.

　　8. demand要求 强令

　　The strike of the porters has held up export orders for two weeks, Do you think it will end soon?

　　So far as I know, the management side has made an improved pay offer, but the

　　unions are just holding out for the original demands.

　　9. demanding费力的 过分要求的

　　Susan brown found that a night nurse’s work is physically less demanding than a

　　clearner’s, and she can sleep 8 hours during the day.

　　Dogs are demanding pets, whereas cats identify with the house and so are content of if their place there is secure.a dog identify with its master and consequently wants

　　him to show proof of his affection.

　　10. democracy民主(制) 民主国家

　　You have got to do far more to take the leadership role in protecting the freedoms, and the democracy, and the citizens of your country.

　　11. demonstrate证明 显示 展示

　　Drugs are approved only after tests have demonstrated that they are relatively safe when use as directed, and when their benefits outweigh their risks.

　　12. dental牙齿的 牙科的

　　What kind of food is most likely to cause dental decay?

　　13. dentist牙科医生

　　I need to find a dentist; you said you know Doctor Smith Well, do you recommend her?

　　Well, I had to see her a few times, but what impressed me most is the magzines in her waiting room.