a)天文.宇宙
heavenlybody(天体)astrology(占星术)
astronomy(天文学)constellation(星座)
Galaxy(银河)galacticnebula(银河星云)
satellite(卫星)planet(行星)
asteroid(小行星)meteor(流星)
meteorite(陨石)
化学
hydurochloric(盐酸)sulfuricacid(硫酸)
reduction(还原)oxygen(氧)
hydrogen(氢)nitrogen(氮)
carbon(炭)neutralize(中和)
filter(过滤)deposit(沉淀)
oxidize(氧化)acid(酸)
alkalinity(碱性)saturation(饱和)
evaoration(蒸发)chemicalsymbol(化学记号)
chemicalaction(化学作用)chemicalreaction(化学反应)
chemicalequation(化学方程式)lead(铅)
zinc(锌)aluminum(铝)
cadmium(镉)uranium(铀)
tin(锡)alloy(合金)
地球.天气
earthsaxis(地轴)latitude(纬度)
longitude(经度)subtropical(亚热带的)
subfrigid(亚寒带的)archipelago(群岛)
humidity(温度)aircurrent(气流)
front(锋面)earthquake(地震)
epicenter(震央)erosion(侵蚀)
reef(矿脉)glacier(冰河)
iceberg(冰山)meander(曲折)
tributary(支流)delta(三角洲)
电气
generate(发电)charge(充电)
ammeter(电流表)voltmeter(电压表)
electrode(电极)cf.cathode(阴极),anode(阳极)
electronics(电子工学)semi-conductor(半导体)
terminal(接头)
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