1.dimension n．尺度(size)；维(a measurement of space)；方面(aspect)

词根记忆：di+mens(测量)+ion--有关测量的--尺度

例:The inside dimensions of a rectangular wooden box were 6 inches by 8 inches by 10 inches.//Earnings and income data overstated the dimensions of hardship.

派生词：dimensional(a．空间的)

2.diminish v.减少，削弱(to reduce)

词根记忆：dimin（小）+ish--使交小一减小，削弱

例:Sulfur dioxide can diminish the respiratory system's ability to deal with all other pollutants.

3.diminution n．减少，缩减(a case or the state of diminishing or being diminished)

词根记忆：di+minu(变小，减少)+tion--减少

例:It prevented the Hopis from experiencing adiminution in population.

4.dinosaur n.恐龙

词根记忆：dino(恐怖的)+saur(蜥蜴)一恐龙

5.dioxide n.二氧化物(an oxide( as carbon dioxide) containing two atoms of oxygen in the molecule)

词根记忆：di（二）+oxtde(氧化物)--二氧化物

例:carbon dioxide二氧化碳

6.diploma n．文凭(a document bearing record of graduation from or of a degree conferred by an educational institution)

例:high school diploma高中毕业证

The man who has made up his mind to win will never say“impossible”，
凡是决心取得胜利的人是从来不说“不可能的”。

——法国皇帝拿破仑(Bonaparte Napoleon' French emperor)