crucial adj.至关紧要的;
crueladj. 残酷的,悲惨的;
cry vi. 哭,流泪v. 叫,喊n. 哭泣,哭声,叫喊,喊声(cry out/喊出声,抱怨);
culture n. 文化,文明;
cure v. 治愈,治疗n. 治愈,痊愈(beyond cure/不可救药);
curious adj. 好奇的,求知的(be curious about/对(某事物)感到好奇);
current adj. 当前的,通用的n.电流,水流,气流;
custom n. 习惯,风俗(the custom/海关);
cut v. 切(割、削),剪,截 n. (刀、剑、鞭等的)切削,伤口,切口
cut down/减少;减低
cut in/插嘴;(突然)插入
cut out/剪除;切掉
cut off/切断,断绝;
damage n. 损害,伤害vt. 损害,伤害(do damage to/损害,破坏);
danger n. 危险,危险物(be in danger of/有……的危险);
dangerous adj. 危险的;
data n. datum的复数,[计] 资料,数据;
day n. 天,白天,白昼(day after day/许多天的;持续不断的);
dead adj. 死的, (语言、习惯)废弃了的,熄灭的adv. 完全地,绝对的,突然的;
deal n. 交易,待遇vi. 处理,应付,做生意(deal with/与……交往(有生意往来);应付,对付;处理);
debate v. 争论,辩论n. 争论,辩论(debate upon a question/讨论(问题)); debt n. 债务,罪过(get into debt/负债in debt/负债); decade n. 十年,十(for decades /数十年);
decide v. 决定( decide to do sth. = be determined to do sth. /下决心做……);
decision n. 决定,决心,决议(make a decision/决定下来, 做出决定;下决心);
declare vt. 断言,宣称;
decrease n. 减少,减少之量v. 减少(decrease to/减少到decrease by/减少了……);
dedicate vt. 献(身),致力(be dedicated to.../献身于……)deep adj. 深的,深奥的,难懂的,低沉的(声音)( be deep in thought/沉思着 deep feelings /强烈的感受)