俗话说“条条大路通罗马”，背诵
401. critical =crucial a. 关键的
402. critical= essential a. 关键的
403. criticize =debate(争论;辩论) v. 批评;责备
404. crucial= important a. 重要的
405. crucially= decisively ad. 关键地
406. crude = unsophisticated adj. 简单的，纯朴的
407. crushed =ground a. 碾碎了的
408. cuing = hint/clue n. 线索，暗示
409. culminate = climax vt. &vi. 到达顶点
410. culminate in=peak 达到顶点;以…告终
411. culmination = high point n. 顶点
412. cumbersome awkward a. 笨重的;麻烦的
413. cumbersome= clumsy a. 笨重的;麻烦的
414. cumbersome= unwieldy a. 笨重的;麻烦的
415. curb= control v. 控制;遏止
416. current =present a. 现在的
417. cushioned=protect 保护
418. dam= block v. 筑坝;控制
419. dangle= hang v. 悬摆;吊
420. daring =bold a. 大胆的
421. debate= argue v. 辩论;争论
422. decimate= destroy v. 大量毁灭
423. decimation= destruction n. 大量毁灭
424. decorating = ornamental adj. 装饰的, 美化的
425. deficient=inadequate adj,不足的
426. deflect = redirect vt. 改变方向
427. degree =extent n. 程度
428. degree= measure n. 程度
429. delicate= dainty a. 易碎的;精美的
430. delight= please v. 使高兴
431. delight= pleasure n. 高兴;愉快
432. deluxe= lavish a. 奢华的
433. demand= need n. 需要;需求
434. demise =extinction n. 死亡
435. demography= population n. 人口统计
436. dense= crowded a. 稠密的;密集的
437. dense= thick a. 稠密的;密集的
438. depend= rely on v. 依赖;依靠依靠
439. dependable= reliable a. 可信赖的
440. depict= describe v. 描述
441. depict= portray v. 描写;描绘
442. deplete=exhaust vt. 耗尽，用尽
443. depletion= drain n. 消耗;用尽
444. deposit =accumulate v. 沉积
445. deposit= lay down v. 放下;放置
446. derive= arise v. 源于;导出
447. desiccated=dry adj. 干的
448. design =create v. 设计
449. designate = assign vt. 指派，指定
450. designate= identify v. 命名;指定
451. designation = identification n. 称号,名字
452. despite= even though 尽管
453. detected=identified vt.认出，识别
454. determine=figure out vt. 决定;判决
455. detractor= critic(批评者) n. 诽谤者;恶意批评者
456. detrimental =harmful a. 有害的;不利的
457. deviate= digress v. 偏离
458. deviation= departure n. 背离
459. devise= create v. 设计;发明
460. devoid of = short of 缺乏…
461. devoid of= lack of a. 缺乏的
462. devoid of= scant of a. 缺乏的
463. devoid of= without(prep.) a. 缺乏的
464. devoted =dedicated a. 虔诚的;专心致志的
465. devoted to =concentrated on a. 虔诚的;专心致志的
466. devour = eat vt. 吞食
467. dictate= determine v. 口授;命令
468. dictate= order v. 命令
469. differential = uneven adj. 不一致的, 有差别的
470. differential= uneven a. 差别的;独特的
471. diffuse = disperse/ spread out vi.& vt. 散开，扩散
472. diffuse =travel v. 扩散;散布
473. diffuse= spread(out) v. 扩散;散布
474. dilemma=problem n. 困境;进退两难
475. diligent= careful a. 勤奋的
476. diligently= carefully ad. 勤奋地
477. dilute= reduce v. 稀释;使薄弱
478. dim= decrease v. 变暗淡
479. dim=weak adj.暗淡的，弱的
480. dimension=aspect n. [数] 维;尺寸;次元
481. dimension=size n.尺寸
482. disassemble =break up v. 拆开
483. disassemble= break apart v. 拆开
484. disband =dismiss v. 解散;遣散
485. discard= throw away v. 摒弃;丢弃
486. discard= throw up v. 摒弃;丢弃丢弃
487. discernible = noticeable a. 可感知到，可注意到的
488. discernible= discriminating a. 可辨别的
489. discernible= noticeable a. 可辨别的
490. discharge= release v. 释放
491. discipline = punish vt. 处罚
492. discrete=separate adj.分开的
493. disentangle =disband v. 解开
494. disguise = hidden 隐藏，掩饰
495. disgust= distaste v. 厌恶
496. disintegrate =fall apart v. 分解;碎裂
497. disintegrate= break apart v. 分解;碎裂
498. disintegrate= tear apart v. 分解;碎裂
499. dismantle =demolish v. 拆开;拆除
500. dismiss = reject vt. 拒绝掉