1.diplomatic a.外的(of, relating to, or concerned with diplomacy or diplomats)

联想记忆：diploma(文凭)+tic--外交工作需要高文凭--外交的

例:diplomatic relation外交关系

2.dire a．可怕的(exciting horror)：悲惨的(dismal)

例:dire consequences可怕的后果

3.disability n.无能(the condition of being disabled)；无资格(lack of legal qualification to do sth.)

词根记忆：dis（不）+ability(能力)一没有能力--无能

例:A common disability in test pilots is hearing impairment,a consequence of sitting too close to large jet engines for long periods of time.

4.disaster n.灾难：彻底的失败(a sudden or great fai,ure)

联想记忆：dis(离开)+aster(星星)一星星偏离轨道一灾难

例:natural disaster自然灾害，//In fact, privatization has rescued individual industries but the economy as a whole is headed for disaster.

派生词:disastrous(a.损失惨重的；灾难性的)

5.discard v.扔掉，丢弃(to get rid of or cast)

词根记忆：dis（消失掉）+card(心)一从心里消失掉一扔掉，丢弃

例:Those researchers won't discard their theories about the effects of microwave radiation on organisms.

6.discern v.（费劲）识别，辨认(to detect with senses other than vision)

词根记忆：dis(分离)+cern(分开，辨别)一识别

例:Human beings can discem spatial relations through their sense of hearing.

派生词：discernible(a．可辨别的)

同根词：concern(v.关注)

7.discharge v./n.排放(to emit);释放(to release from confinement, custody or care)；解雇(to dismiss)

词根记忆：dis（离开）+charge(装，委托)一不装载一释放

例:Federal regulations requiring a drop in industrial discharges of lead went into effect in 1975. 11 The physician knew when the patient may be discharged.

8.disciple n.门徒，弟子(follower)

例:This famous musician founded no school and left behind only a handful of disciples.

9.discipline v.训练，调教(to teach, to train)；n.纪律；学科(a field of study)

联想记忆：dis+cip(拿)+line(线)--拿一条线来训练--训练

例:The sergeant disciplined the recruits.//academic discipline学科

10.disclosure n．披露，揭发(the act or' an instance of disclosing)

词根记忆：来自disclose(v.公开，揭露)

例:Among those making the required financial disclosure this year is a prominent local businessman, Arnold Bergeron.

同根词：close(v.关；结束；a．亲近的)