a)天文。宇宙
heavenly body (天体) astrology (占星术)
astronomy (天文学) constellation (星座)
Galaxy (银河) galactic nebula (银河星云)
satellite (卫星) planet (行星)
asteroid (小行星) meteor (流星)
meteorite (陨石)
(b)化学
hydurochloric (盐酸) sulfuric acid (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) chemical symbol (化学记号)
chemical action (化学作用) chemical reaction (化学反应)
chemical equation (化学方程式) lead (铅)
zinc (锌) aluminum (铝)
cadmium (镉) uranium (铀)
tin (锡) alloy (合金)
(c)地球。天气
earth‘s axis (地轴) latitude (纬度)
longitude (经度) subtropical (亚热带的)
subfrigid (亚寒带的) archipelago (群岛)
humidity (温度) air current (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)
(d)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)
责任编辑：mman
