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选修（）1Unit4l闪烁；（眼睛因兴奋）发亮闪耀，闪烁；（眼睛的）闪亮
1.twinkle/twi gkl/vi.n.stars twinkling天空中闪烁的星星in thesky远处闪耀的点点灯光twinkling lightsin thedistance她的双眼闪耀着愉悦的光芒Her eyestwinkled withamusement（眼睛的）闪烁;欣喜的神情a twinklein youreye眨眼之间in thetwinkling ofan eye/in atwinkling=in theblink ofan eye
2.steady/1stedi/adj.稳定的，恒定的；稳步的，匀速的；平稳的，稳固的steadily adv.steadinessn.逐渐进步保持平稳make steadyprogress remain/hold steady川流不息的来往车辆a steadystream oftraffic稳定的职位/工作/收入a steadyjob/work/ine稳定的增长/下降稳定增加a steadyincrease/rise/growth/decline increase/grow steadilymove atalow andsteady pace十分可靠；稳如泰山as steadyas arock平静下来（）steady oneself/one^nerves calmdown密度；密集，稠密.茂密的；密集的
3.density/*densoti/n.dense adjdensely adv.low/high人口密度低/高population density茂密的森林/热带雨林浓雾/浓烟/密云a denseforest/jungle densefog/smoke/cloud密集人口密集的人群a densepopulation adense crowd密集的交通The countryis servedby adense networkof roads.人口密集地区a denselypopulated area盖得/塞得严实的densely covered/packed.地平线，海平线；（知识或兴趣的）范围，眼界水平的
4.horizon/ho raizn/n horizontaladj.反垂直的horizontally adv.vertical adj.vertically adv.在地平线上；将要发生的on the horizonBusiness isgood now,but thereare afew problemson thehorizon.We couldsee aship onthehorizon.开阔眼界（用复数）broaden/expand somebodyshorizons香的,芳香的香味
5.fragrant/frei gr^nt/adj.fragrance n.fragrantly adv.fragrant芳草；香花；精油herbs/flowers/oilsThe bathoil esin variousfragrances.花粉授粉传粉者传粉
6.pollen/pD bn/n.pollination n.pollinator n.pollinate vt.flowers由蜜蜂授粉的花/由风传粉的花卉pollinated bybees/the wind微生物组，微生物群系
7.microbiome/,mai krsubai oum/n.微小的显微镜微生物学micro microscopen.microbiology n.microbiological adj.microbiologist微生物学家微生物微生物生物群系n.microbe n.microorganism n.biome n.裸露的；无遮盖的近
8.naked/nei kid/adj.nude adj.bare adj.nakedly adv.nakedness n.赤裸的身体裸露的肩膀赤身裸体半裸a nakedbody nakedshoulders starknaked halfnaked肉眼（）肉眼可见/不可见the naked eye bein visibleto/with the nakedeye手足无措feel pletelynaked赤裸裸的攻击明摆着的事实naked aggressionthenakedtruth万亿，兆；大量，无数
9.trillion/tn Ijon/n.百万百万富翁million n.millionaire n.十亿亿万富翁billion n.billionaire n.大量；无数trillions of（不用复数）two/three/four trillion（说时，后面不加a,one,two,several,etc.trillion trillions若前面没有数目或数量,可用（）和均用复数动词）trillions of...trillion trillions混合品，混合物；融合使混合（和某物）融合搅拌机
10.blend/blend/n.vt.vi.blender n.调配的威士忌/茶blend with/together;blend Awith B;blend Aand Btogether blendedwhisky/tea调制茶事实与传说相糅合的一个故事a blend of teaa storythat blendsfact andlegend ablendof年轻而且有经验youth andexperienceThe oldhouse blendsin perfectlywith thecountryside.这幢老房子和这里的乡村融为一体融合到（消失于人群）blend intothe crowd稳固地位，立足点；立足处站稳脚跟
11.foothold/futhould/n.gain/establish afoothold肠道,消化道；（）（尤指动物的）内脏同,肠无胆量
12.gut/gA t/n.pl.intestine ngutless adj.的本能的反应/本能的感觉/直觉gut reaction/feeling/instinct…本能地感觉要…I have a feelingin myguts that做…是需要勇气的…it takesguts to do sth.有勇气做have the guts todo sth.问题的实质thegutsof theproblem肥胖
13.obesity/oubi:soti/n.obese adj.肥胖会增加患心脏病的风险Obesity canincrease therisk ofheart disease.认知的.认知认
14.cognitive/kD gnotlv/adj.cognitively adv.cognition ncognitive psychology知心理学儿童的认知发展a childscognitive development.体内循环的血液，血流
15.bloodstream/*blA dstrim/n这种药物是直接注射到血液中的The drugis injecteddirectly intothe bloodstream.神经；（）神经质，神经紧张；勇气，气魄紧张
16.nerve/n3v/n.pl.nervous adj.nerveless神经麻木的adj.某人非常焦虑［恐惧］somebodys nervesare onedge sufferfrom nerves=be verynervous定神/稳住情绪calm/steady yournerves settle/soothe ones nerveshave/find thenerve todo sth.有勇气做・・・lose yournerve失去勇气.做…需要很大勇气it takesa lotof nervetodosth保持镇静hold/keep yournerve烦扰某人；使某人心神不定get ononesnerves（器官等的）移植；移植器官
17.transplant/trsenspla nt/n.移植（器官）/trains pla:nt/vt.心脏移植手术heart transplantsurgery接受心脏移植移植手术haveaheart transplanta transplantoperation排斥移植的器官reject transplantedorgans肝脏移植liver transplantation营养不良.营养
18.malnutrition/.m2elnju triJ n/n.nutrition n有营养的.营养物质nutritious adj.nutrient n营养不良的难民refugees sufferingfrom malnutrition小滴小滴的水
19.droplet/drD plot/n.tiny dropletsof water隔离，隔离状态；孤独，孤立状态
20.isolation/,al solei fn/n.isolated adj.isolate vt.geographical地理上的隔离isolation隔离医院/病房an isolationhospital/ward国际手氐立/夕卜交子瓜立/政治立international/diplomatic/political isolationJlR（）孤立从..中孤立=in pleteisolation bein isolationfrom sth.be isolatedfrom孤独感感到孤独a feeling/sense ofisolation=feel isolated隔离；区分isolate sb.from sth.个别事件偏僻的农村地区isolated incident/case/event isolatedrural areas（给…）注射（药物等）；（给…）添加，增加
21.inject/i ndjekt/vt.injection n.注射给…注射inject sth.into injectsb.with sth.inject fun/new lifeinto/a noteof humoursth.（给・•・）添力口，增加（add..to...）inject money/capital intosth.=invest moneyin打针；注射have/receive an injection给••打针=give sb.aninjectionadminister aninjection测定（整套基因或分子成分的）序列；按顺序排列
22.sequence/si kwsns/vt.一系列，一连串；顺序，次序n.连续的；相继的sequential adj.sequentially adv.〔尤指事件或动作的）先后安排，编排顺序sequencing n.按顺序不按照顺序in sequenceout ofsequence按逻辑顺序/按正确的顺序in alogical/correct sequenceasequence offailures/events——连串的・・・基因测序项目a genesequencing project。
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