placid 英 [ˈplæsɪd] 美 [ˈplæsɪd] adj. 平静的；温和的；沉着的
考点1: adj.宁静的，风平浪静的: free from storms or physical disturbance
■e.g. a vacation in the placid lake community 在宁静的湖区度过的假日
■同: calm, halcyon, hushed, peaceful, quiet, serene, still, stilly, tranquil, untroubled
■反: boisterous, clamorous, noisy, raucous, roistering, rowdy, tumultuous, uproarious 喧闹的
考点2: adj.冷静的，淡定的: free from emotional or mental agitation
■e.g. I know an exceptionally placid mother who was rarely upset by her six children 我认识一个异常淡定的母亲，她几乎从未因为自己的六个孩子而烦恼过。
■同: collected, composed, coolheaded, level, limpid, possessed, recollected, sedate, undisturbed, unperturbed
■反: agitated, discomposed, disturbed, flustered, perturbed, upset 不安的，焦虑的
■派: placidity n.宁静，安宁
regress 英 [rɪˈɡres] 美 [rɪˈɡres] vi. 逆行，倒退；复归 n. 回归；退回 vt. 使…倒退
考点1: vi.后退: to go back; move backward
■e.g. To stand still is to regress.不进则退。
■同: retrogress, return, revert
■反: advance, develop, evolve, progress 前进，发展
考点2: vi.退化，恶化: to become worse or of less value
■e.g. The annual celebration has regressed to the point where it's nothing more than an excuse to get drunk.年度的庆祝活动己经堕落成一个尽情喝醉的借口了。
■同: atrophy, crumble, decay, decline, degenerate, descend, deteriorate, ebb, retrograde, rot, sink, worsen
■反: ameliorate, improve, meliorate 改善
■派: regressive adj.后退的，退化的;regression n.后退，退化
procure 英 [prəˈkjʊər] 美 [prəˈkjʊr] vt. 获得，取得；导致 vi. 取得
考点1: vt.获得，取得: to get possession of
■e.g. procured the prisoner's release得到了释放囚犯的许可
■同: acquire, attain, garner, knock down, pull down, bring in
■反: relinquish, forfeit, lose 放弃
sordid 英 [ˈsɔːdɪd] 美 [ˈsɔːrdɪd] adj. 肮脏的；卑鄙的；利欲熏心的；色彩暗淡的
考点1: adj.肮脏的，不干净的: not clean
■e.g. I will not let my children grow up in such a sordid environment. 我绝不会让我的孩子在这样一个肮脏的环境之中成长。
■同: besmirched, dirty, dusty, filthy, foul, grubby, muddy, nasty, smudged, soiled, stained, sullied, unclean
■反: clean, immaculate, spotless, stainless, unsoiled, unstained, unsullied干净的
考点1: adj.卑鄙的: marked by baseness or grossness
■e.g. Behind his generous donation were sordid motives. 在他慷慨捐资的背后有着卑鄙的动机。
■同: base, contemptible, despicable, detestable, dishonorable, execrable, ignominious, mean, vile, wretched
■反: honorable, lofty, noble, straight, upright, venerable, virtuous 高尚的，值得尊敬的
attune 英 [ə'tjuːn] 美 [ə'tʊn; ə'tjʊn] vt. 使协调；使合拍；为…调音；调合波长
考点1: vt.使协调，使和谐: to bring into harmony
■e.g. After years spent in academia, he found it difficult to attune himself to the corporate culture.在学术圈摸 爬滚打多年之后，他发现自己很难融入企业文化之中。
■同: accommodate, conciliate, conform, coordinate, key, reconcile
■反: disharmonize 使不和谐皆；disarray, disorder, disorganize, disrupt弄乱，打乱
■派: attunement n.调音，协调
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