1、dawn 黎明，拂晓
work from dawn to dark
2、dazzle (强光等)使目眩，耀眼：
He was dazzled by his sudden success.
3、deceive 欺骗，蒙蔽：
deceive oneself
4、decent 体面的，像样的:
She didnt have a decent dress for the ball.
5、decline 拒绝，谢绝：
We sent him an invitation but he declined.
6、decompose 分解，腐烂，腐败：
decompose a compound into its elements.
7、dedicate 奉献，把······用在(to):
The doctor dedicated himself to finding a cure.
8、deduce 演绎，推论：
From her conversation, I deduced that she had a large family.
9、deform变形：
Heat deforms plastic.
10、defy 公然违抗，反抗：
He was going ahead defying all difficulties.
11、degenerate 衰退，堕落，变坏(into):
Her eyesight degenerated with the years.
12、deliberate 慎重的，深思熟虑的`：
The government is taking deliberate action to lower prices.
13、delight 高兴，快乐：
To the teachers great delight , all his students passed the examination.
14、deliver 投递，传送，运输：
deliver the mail
15、demonstrate 论证，证明：
demonstrate a philosophical principle
16、denote 表示，是······的标志，意思是：
A frown often denotes displeasure.
学识谷
