1.encroach v.侵犯，侵害(to enter into the possessions or rights of another)

例：The lawyer argues that a state law prohibiting smoking in public places unfairly encroaches on the rights of smokers.

派生詞：encroachment(n.侵犯)

同根詞：crochet(v.用鉤針編織)

2.encyclopedia n.百科全書(a work that contains information on all branches of knowledge or treats comprehensively a particular branch of knowledge usually in articles arranged alphabetically often by subject)

詞根記憶：en+cyclo(環(huán)，圓)+ped（兒童）+ia--教給兒童全面知識(shí)的書--百科全書

例：A salesman sells 12 identical sets of encyclopedias and makes $1,800 in commissions.

派生詞:encyclopedic(a．如百科辭典的，百科全書式的)

同根詞：pediatrics(n.兒科)

3.endanger v.危及，危害(to bring into danger or peril)

詞根記憶：en+danger(危險(xiǎn))--危及

例：The use of pesticides may be endangering certain plant species dependent on insects for pollination.

4.endeavor n.努力(serious and determined effort);事業(yè)(enterprise)

詞根記億：en+deavor(責(zé)任)--責(zé)任重大的事情一事業(yè)

例：They were frequently joint endeavors by members of two or three different ethnic groups.//Cattle raising is less lucrative than other endeavors.

5.endemic a．地方性的(restricted or peculiar to a locality or region)；n．

例：endemic disease地方病

同根詞：eprdemic(a．流行性的)；pandemic(a．廣泛的)

6.endorphin n.【生化】內(nèi)啡肽（主要存在大腦中，可緩解痛感并影響情緒）(any of a group of endogenous peptides found especially in the brain that bind chiefly to opiate receptors and produce some pharmacological effects like those of opiates)

例：The presence of endorphins may help to explain differences in response to pain signals.

7.endorse v.背書(to sign one's name as payee on the back of a check in order to obtain the cash or credit represented on the face);支持，贊同(to approve)

詞根記憶：en+dorse(背)一在背面寫字-背書，商業(yè)上的背書一般表示認(rèn)可，引申為支持

例：The bank teller reminded me to endorse the check l was cashing.//I do not endorse your choice of friends.

派生詞:endorsement(n.背書，認(rèn)可)

8.endothermic a．【動(dòng)】溫血的，恒溫的( warm-blooded)

詞根記憶：endo(到…里面)+therm(熱)+ic --從里面散發(fā)熱的--溫血的，恒溫的

派生詞:endothermic species溫血物種

9.enforce v.實(shí)施,執(zhí)行(to carry out effectively)

詞根記憶：en(使…)+force(力量)--使力量體現(xiàn)--實(shí)施，執(zhí)行

例：The extant workplace safety regulations were stringently enforced.

派生詞:enforcement(n．執(zhí)行，強(qiáng)制)；unenforceable(a．無法執(zhí)行的)

10.enfranchisement n.解放，釋放(setting free)

詞根記憶：來自franchise(v.解放；給予權(quán)利)

例：female enfranchisement婦女解放

同根詞：enfranchise(v.給予選舉權(quán);解放)