1.deleterious a.（對(duì)身心）有害的(injurious)

聯(lián)想記憶：delete(刪除)+rious一對(duì)身心有害的定要?jiǎng)h除一有害的

例:Efforts to control the spruce budworm have had deleterious effects on the red-osier dogwood.

2.deliberate a．深思熟慮的(characterized by or resulting from careful and thorough consideration)；蓄意的(voluntary)

詞根記憶：de+liber(自由)+ate--按自由意志的--蓄意的

例:The deliberate selective breeding produced modern domesticated sheep.//The deliberate and even brutal aggression integral to some forms of competitive athletics increase the likelihood of imitative violence.

同根詞：liberality(n.自由，慷慨)；liberty(n.自由)

3.delicacy n.美味，佳肴（sth. pleasing to eat that is consdered rare or luxurious）；精妙(the quality or state of being luxurious)

詞根記憶：來自delicate(a.精美的；可口的)

例:A special Japanese green tea called genmai-cha contains brown rice and is considered as adelicacy fit for a gourmet by most Japanese, though it is virtually unavailable outside Yokohama.

4.delicate a．微妙的（subtle);精致的(pleasirg to the senses);脆弱的(fragile)

詞根記憶：de+lic(引誘)+ate--再引誘人的--精致的

例:The new variety of wheat had a more delicate flavor.//Tom was a delicate child who is often ill．

5.delineate v.描畫(to i rdicate or represent by drawn or painted lines);描給輪廓(to mark the outline of)

聯(lián)想記憶：de+line(線條)+ate--用線條畫--描畫

例:An argument is delineated, followed by a counterargument.

6.delinquent n.行為不良的人（a delinquent person);a.拖欠的(being overdue in payment）；違法的（offending by neglect or violation of duty or of law)

詞根記憶：de+linqu(離開)+ent--離開自己的崗位--失職--違法的

例:The bank holds $3 billion in loans that are seriously delinquent.//delinquent behavior違法行為

派生詞:delinquency(n.逾期債款)

7.deliver v.支付（to take and hand over to or leave for another)遞送（to send);實(shí)現(xiàn)(to come through with)

詞根記憶：de（離開）+live(舉起)+r--舉起然后拿走--遞送

例:In Borania many people who want to quit smoking wear nicotine skin patches, which delwer small doses of nicotine through the skin.

派生詞:delivery(n.交付;遞送)

And gladly would learn.and gladly teach.
勤于學(xué)習(xí)的人才能樂于施教。

——英國詩人喬叟(Chaucer, British poet)