demand sth. of sb. 向某人要求(非物质的)东西；demand sth. from sb. 向某人要求(物质的)东西
in demand 有需求；on demand 受到要求时
be dependent on 依靠
deprive sb. of sth. 剥夺某人某物
derive…from(=obtain…from)从…取得，由…来的;derive from(=come from)起源于
despair of(=lose all hope of)绝望
in despair 绝 望
despite(=in spite of)不管，尽管
in detail 详细地
deviate from 偏离，不按…办
on a diet 吃某种特殊饮食，节食
differ from…in 与…的区别在于…
in difficulties…有困难，处境困难，
discharge sb.(from)…for(=dismiss sb.from a job or)因…解雇，开除
fall back(=retreat，turn back)撤退；in disorder 慌乱地，狼狈不堪
