They are pursuing their aims with dogged determination.他们以坚定的决心追求自己的目标。

devise vt.设计；发明

The government devised a scheme to house the refugees.政府制订了一个收容难民的计划。

devote vt. 投入于，献身于

She deoted all her spare time to fishing.她把所有的业余时间都用在钓鱼上了。

diagram n.图表

He followed the instructions on the diagram.他遵照图表中的说明(进行操作)。

dialect n.方言，土话

My grandfather spoke a rural Greek dialect.我爷爷说的是希腊乡下的方言。

dictate vt.规定；决定，确定

The tennis club rules dictate that suitable footwear must be worn on the courts.这家网球俱乐部的章程规定，在球场上必须穿适合的鞋子。

diet n.饮食，食物

Human beings need a diet which includes adequate protein.人类需要富含蛋白质的食物。

A fat person ought to and go for a walk daily.肥胖的人应该节食，并每天坚持散步。

digest vt.消化

Certain people find that they cannot digest meat easily.某些人发现自己很难消化肉类。

dim adj.暗淡的，模糊的

The light is too dim for me to read easily.灯光太暗了，我没法阅读。

dimension n.尺寸；尺度

The estate agent's brochure specifies the dimensions of each room.房产经纪人的小册子里详细列明了每个房间的面积。