30.epi-表示"在….上，在….周围，在….后面"
epidemic流行性的（epi+dem人民＋ic→在人民周围→流行的）
epigram警句，格言（epi+gram写→写在上面的话→格言）
epilogue后记，结尾部分（epi+lougue说→在后面说的话→后记）
episode一段经历，片段（epi+sode路→在路上→一段经历；片段）
epitome梗概，缩影（epi+tome卷册→〔一卷书后的〕梗概）
31.eu-表示"好，优秀"
eulogize赞美（eu+log说＋ize→说好话）
eulogy
mid-15c., from Latin eulogium, from Greek eulogia “praise; good or fine language” (in New Testament, “blessing”), from eu “well” (see eu-) + -logia “speaking” (see -logy). Eu legein meant “speak well of.”
euphemism委婉的词语（eu+phem讲话＋ism→讲好话）
1650s, from Greek euphemismos “use of a favorable word in place of an inauspicious one, superstitious avoidance of words of ill-omen during religious ceremonies,” also of substitutions such as Eumenides for the Furies. This is from euphemizein “speak with fair words, use words of good omen,” from eu- “good, well” (see eu-) + phēmē “speech, voice, utterance, a speaking,” from phanai “speak” (from PIE root *bha- (2) “to speak, tell, say”). See also Euxine, and compare Greek Greek aristeros “the better one,” a euphemism for “the left (hand).” In English, a rhetorical term at first; broader sense of “choosing a less distasteful word or phrase than the one meant” is first attested 1793. Related: Euphemistic; euphemistically.
All the ancients, but most of all the Athenians, were careful not to use ill-omened words; so they called the prison ‘the chamber,’ and the executioner ‘the public man,’ and the Furies (Erinyes) they called ‘Eumenides’ (‘the kindly ones’) or ‘the Venerable Goddesses.’ " [Helladius of Antinoopolis, 4 c. C.E., quoted by Photius]
Thus, in our dialect, a vicious man is a man of pleasure, a sharper is
one that plays the whole game, a lady is said to have an affair, a
gentleman to be a gallant, a rogue in business to be one that knows
the world. By this means, we have no such things as sots, debauchees,
whores, rogues, or the like, in the beau monde, who may enjoy their
vices without incurring disagreeable appellations. [George Berkeley,
“Alciphron or the Minute Philosopher,” 1732]
‘ Pass away ’ is a euphemism for ‘ die ’.
euphonious声音优美的（eu+phon声音＋ious→声音好听的）
eurhythmic协调的（eu+rhythm节奏＋ic）
euphoria幸福愉快感（eu+phor带来＋ia→带来美好→愉快）
eugenics优生学（eu+gen产出＋ics→产生优秀〔后代〕→优秀生
c. 1600 (adj.); 1630s (n.), from French Européen, from Latin Europaeus, from Greek Europaios “European,” from Europe (see Europe).
28.e-,ef-表示"出，出来"
elongate延长，拉长（e+long长＋ate→长出来）
make long or longer by pulling and stretching
Sometimes hormones are used to elongate apples so that they look more attractive.
In grasses the leaves elongate in the dark and break through the surrounding coleoptiles.
elaborate精工细做的（e+labor劳动＋ate→劳动出来→精做的）
They used elaborate secret codes, as when the names of trees stood for letters
The heat had to be dissipated by elaborate cooling systems.
eject投出，掷出（e+ject掷→掷出）
Unable to open or close the inject/ eject port.
Now open up a second terminal and try to eject the DVD drive
emerge浮现（e+merge投入；淹没→淹没的东西出现→浮现）
evade逃出，逃避（e+vade走→走出去→逃避）
She is trying to evade all responsibility for her behaviour.
Delegates accused them of trying to evade responsibility for the failures of the past five years.
eradicate根除，灭绝（e+radic根＋ate→把根挖出→根除）
And surely we will aim to finally eradicate disease and poverty.
These insects are very difficult to eradicate.
effluence流出（ef+flu流＋ence→流出）
Application of Fractal Theory in Effluence Research of Area Social Economy Development
Study on River Effluence Trade Management Information System
34.extra-表示"以外的，超过的"
extracurriculum课外的(extra+curriculum课程表)
extraordinary格外的（extra+ordinary变通的→超出普通）
extrasolar 太阳系以外的（extra+solar太阳的）
extraneous外来的（extra+aneous…的→从外面来的）
extravagant奢侈的（extra+vag走＋ant→走得过分→奢侈的）
extrovert性格外向的（extra+vert转→〔性格〕向外转→外向）
extrapolate推断（extra+polate放→放到〔事实〕外→推断）
extraviolet紫外线的（extra+violet紫色的）
exothermic放出热量的（exo+therm热＋ic→热外出→放热）
29.em-,en-
① 表示"进入…之中，包围"
embrace拥抱（em+brace胳膊→进入怀抱）
embed安置；嵌于（em+bed范围；床→进入范围→安置）
empathy感情相融的（em+pathy感情→进入感情）
embarrass使难堪（em+barrass套子→进入套子→难堪）
embattle整军备战（em+battle战斗）
enroll注册，记入名册（en+roll名单）
encage关入笼中（en+cage笼子）
enchain束缚（en+chain锁链）
② 表示"使…进入状态"
empower授权（em+power权力）
embitter使痛苦（em+bitter痛苦的）
embody体现（em+body身体→〔精神〕进入身体→体现）
embellish装饰（em+bell美好＋ish→进入美好→装饰）
emboss使凸出（em+boss凸出→使凸出）
emphreal天空的（em+pyre火+al→进入火、太阳→天空的）
enact制定；颁布（en+act行动→进入行动→颁布〔法令〕）
enchant使迷醉（en+chant咒语→被咒语所迷醉）
encompass包围，围绕（en+compass包围）
endanger使危险（en+danger危险）
encourage鼓励（en+courage勇气→使人进入勇气→鼓励）
enlighten启发，开导（en+ligh光＋en→给人光明→启发）