equ: from Latin aequus, meaning ‘equal‘, equalize:使相等; equivalent:[?‘kw?v?l?nt], A is equivalent to B; equilateral:[?i?kw?‘læt?r?l], 等边的; equation:等式
equable:[‘ekw?bl] adj. 平静的, 变动小的
adequacy:[‘æd?kw?si] n. 足够，适当. 与需要的或必须的相等。
equilibrium:[?i?kw?‘l?bri?m] n. 平衡,均衡. a root from Latin libra, meaning ‘weight‘ or ‘balance‘, [‘li?br?] n. 磅，磅 n. 天秤座.
equinox:[‘i?kw?nɑ?ks] n. 昼夜平分点, 春分或秋分. nox means ‘night‘ in Latin. solstice: [‘sɑ?lst?s] n. 至, 至点, 至日.
quis: from Latin verb meaning ‘to seek or obtain‘, 同一派生还有quer、quir和ques。
inquisition: [??nkw?‘z??n] n. 调查, 询问, (罗马天主教的)宗教法庭.
perquisite: [‘p??rkw?z?t] n. 额外补贴, 临时津贴. perk:[p??rk] vi. 振作,昂首 vt. 使神气活现,无理强迫 n. 特权,利益
acquisitive: [?‘kw?z?t?v] adj. 想获得的, 贪得的
requisition: [?rekw?‘z??n] n. 请求,强求,征用； v.要求，命令，征用； n. 【律】引渡要求. request: [r?‘kwest] n. 要求, 请求 vt. 请求, 要求.
ple/plen: from Latin word meaning ‘to fill‘, just like plenty meaning ‘filled‘, complete meaning ‘thoroughly filled‘.
plenary:[‘pli?n?ri] adj. 充分的，完全的，全体出席的. plenary session 全会。
complement:[‘kɑ?mpl?ment] n. 补语；余角；补足物；补体 vt. 补足，补助。 compliment 称赞，恭维。
deplete: [d?‘pli?t] vt. 耗尽,使...空竭。 de- means ‘do the opposite of‘.
replete: [r?‘pli?t] adj. 饱满的, 塞满的.
metr/meter: from Greek by way of Latin, means measure. thermometer:[θ?r‘mɑ?m?t?r] n. 温度计, perimeter:[p?‘r?m?t?r] n. 周长, 周界, 边缘, isometric: [?a?s?‘metr?k] adj. 等轴的，等容积的，等立方的，等比例的 n. 等容线，等距线.
metric: [‘metr?k] adj. 公制的,米制的,十进制的 n. 度量标准,公制,米制,十进制. kilogram:[‘k?l?ɡræm] n. 千克, 公斤; liter:[‘li?t?r] n. 升, 公升(容量单位) =litre(英);
meter:[‘mi?t?r] n. 公尺,韵律,计量器 vt. 用表测量[计量, 记录]. iambic [a?‘æmb?k] n. [诗]短长格, 抑扬格, 抑扬格诗 adj. [诗]短长格的, 抑扬格的.
odometer: [o?‘dɑ?m?t?r] n. 里程表. the root from the Greek word hodos, meaning ‘road‘ or ‘trip‘.
tachometer: [tæ‘kɑ?m?t?r] n.转速计,流速计.the Greek root tach- means ‘speed‘. tachyon:[‘tæki???n] n. 超光速粒子; tachycardia: [?tæk?‘kɑ?d??] n. 心悸亢进, 心动过速
aud: from the Latin verb audire, is the root that has to do with hearing. audible:[‘??d?bl] adj. 听得见的; audience:[‘??di?ns] n. 听众, 观众, 读者, 拥护者, 倾听, 正式会见; auditorium: [???d?‘t??ri?m] n. 礼堂，观众席.
auditor: [‘??d?t?r] n. 听者, 收听者, 稽核员. audit [‘??d?t] n. 查帐,审计 vt. 审计,旁听.
auditory: [‘??d?t??ri] adj. 听觉的 n. 观众，观众席.
audition:[??‘d??n] n. 听, 听力, 试听 vi. 试演，试唱，试音 vt. 对（某人）面试；让（某人）试演（或试唱、试音）.
inaudible: [?n‘??d?bl] adj. （因声音低）听不见的
son: is the Latin root meaning ‘sound‘. sonata:[s?‘nɑ?t?] n. 奏鸣曲; sonorous: [‘sɑ?n?r?s] adj. 洪亮的, 响亮的, 作响的，堂皇的.
sonic: [‘sɑ?n?k] adj. 音波的,音速的
dissonant: [‘d?s?n?nt] adj. 不谐和的, 刺耳的, 不调和的. dis- 否定前缀。
resonance: [‘rez?n?ns] n. 共鸣, 共振, 洪亮。 resonate:[‘rez?ne?t] v. 产生共鸣
ultrasonic:[??ltr?‘sɑ?n?k] adj. 超声波的. sonogram:[?so?n??græm] n. 超声波扫描图.
err: from the Latin verb errare, means ‘to wander‘ or ‘to stray‘. error: [‘er?r] n. 错误, 过失,误差.指正确错误之间徘徊。erratum:[e‘rɑ?t?m] n. 勘误表, is Latin for ‘mistake‘, so an errata（[e‘rɑ?t?] 正误表,勘误表） page is a book page lists mistakes found too late to correct the book‘s publication.
errant: [‘er?nt] adj. 错误的，脱离正途的，漫游的
aberrant: [æ‘ber?nt] adj. 脱离正道的, 脱离常轨的, 变体的，畸变的
erratic: [?‘ræt?k] adj.飘忽不定的； 行为古怪，反复无常； （运动或行为）不规则的
erroneous: [?‘ro?ni?s] adj. 错误的, 不正确的。erroneous theory, erroneous conclusion, erroneous decision.
ced: comes from the Latin verb cedere, meaning ‘to proceed‘ or ‘to yield ([ji?ld] n. 生产量, 投资收益 v. 生产, 屈服, 投降, 弯下去, 凹下去)‘. recede [r?‘si?d] vi. 后退,减弱 vt. 撤回; procession:[pr?‘se?n] n.队伍，行列； 一列，一排； 列队行进; recession: [r?‘se?n] n. 后退,凹入的地方,不景气.
cede: [si?d] v.割让(领土，权利) v. 放弃
concede: [k?n‘si?d] vt. 承认,给予 vi. 让步
accede: [?k‘si?d] vi.同意，就职，加入
precedent: [‘pres?d?nt] adj. 在前的,在先的 n. 先例,前例
Words from Mythology and History
Augean stable: [???d?i??n] adj.[希神]Augeas王的,极脏的. Augean task, Augen labor,难以处理的任务，或者清除腐败。
Croesus: [?kri?s?s] n. 大富豪, 大财主
dragon‘s teeth: seeds of confilect. Thebes [θi?bz] n.[史]底比斯(古希腊Boeotia的主要城邦)
Hades: [‘he?di?z] n.冥府,地狱,阎王. Persephone: [p?:‘sef?ni] n.[希神]珀尔塞福涅(宙斯之女,被冥王劫持娶作冥后)
lethargic: [l?‘θɑ?d??k] adj. 迟钝的(不活泼的,冷淡的,困倦的,昏睡的). drink from the river Lethe: means forgetfulness. lethargy: [‘leθ?rd?i] n. 昏睡,瞌睡,无力气.
Midas touch: [‘ma?d?st?t?] ph. 点物成金术, 挣钱的本领(这个故事与中国人熟悉的点金石或点金指的神化传说有异曲同工之妙)
Pyrrhic victory: [?p?r?k‘v?kt?ri] n. -ries 付出极大代价而获得的胜利; 惨胜
stygian: [‘st?d?i?n] adj. 地狱的, 阴暗的, 幽暗的，冥河的. the river Stys, meant ‘hateful‘.