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run out ofto use up or finish a supply of sth. 用光， 耗尽 economistn.a person who studies or writes about economics 经济学家 comprehensiveadj.including all, or nearly all, elements or aspects of sth. 综合（性）的，全面的 assessmentn.an opinion or a judgment, esp. of a quantitative nature, about sb./sth. that has been thought about very carefully 评估（价） backvt.to support sb. or sth., especially by giving them money or using your influence 支持，拥护 instituten.研究所（院） aidn.help that you need to do a particular thing 帮（援）助 releasevt.to let news or official information be known and printed 发行（布，表） conferencen.a large formal meeting where people discuss important matters such as business, politics, or science 会议 underwayadj.happening now 进行中的 revealvt.to make sth. known to sb. 披（揭）露 roughlyadv.approximately but not exactly 大概（约） basinn.an area of land drained by a large river with other rivers or streams running into it 盆（洼，泊）地 barelyadv.almost not 几乎没有 adequateadj.enough in quantity or of a good enough quality for a particular purpose 足够的，充分的 supplyn.an amount of sth. that is provided or available to be used 供给（应） affordvt.to have enough money or time to be able to buy or to do sth. 买（负担）得起 make use ofto use sth./sb., especially in order to get an advantage 利（使）用 densely/heavily populated人口稠密的 currentadj.happening or existing now 现在（行）的，当前的 consumptionn.the act of using energy, food, or materials; the amount used 消耗（费）， 消耗量 grimadj.unpleasant and depressing 令人担忧（发愁）的 statisticsn.(pl.) a systematic collection, or presentation, of numerical information 统计（数字，资料） litren.(AmE: liter) the basic unit for measuring liquid in the metric system 升 Calorien.a unit for measuring the amount of energy that food will produce 卡路里 livestockn.animals such as cows and sheep that are kept on a farm 家畜， 牲畜 domesticadj.connected with the home or family 家（庭，用）的 account forto form a particular amount or part of sth. （总共）占 fractionn.(a of) a small part or amount of sth. （小）部分 layern.a level, or part, within a system or set of ideas 层（次） in theory在（从）理论上 soddenadj.very wet and therefore heavy 浸润（透）的 needless to sayused to emphasize that the information you are giving is obvious 不用说 be in no position to do sth.to be unable to do sth. because you do not have the ability, money, or power to do it 没有能力做 importn.a product or service that is brought into one country from another 进口货物（商品） along withtogether with sb. or sth. else 与一起 oddadj.happening or appearing occasionally; not very popular or frequent 少见的，偶尔的 mercyat the mercy ofn.a kind or forgiving attitude 怜悯 unable to do anything to protect yourself from sb. or sth. 完全受支配（控制），任由摆布 imperfectadj.containing faults or mistakes; not complete or perfect 不完善（美）的 outputn.the amount of goods or work produced by a person, machine, factory, etc. 产量 irrigationirrigaten.v.supply of water to land or crops 灌溉 to supply land or crops with water 灌溉 devicen.a machine or tool that does a special job 装置，设备 pumpn.a machine that is used to force liquid, gas or air into or out of sth. 泵，抽水机 tapvt.to draw liquid 抽取（出） deployv.to position people or equipment ready for use 部署，配置 yieldv. n.to produce or provide sth., for example a profit, result or crop 生产， 产生（出） the amount of profits, crops, etc., that sth. produces 产量, 收益 capitaln.a large amount of money that is invested or is used to start a business 资本（金） modestadj.not very large, expensive, important, etc. 不太大的，适中的 rain-fedadj.fed by rain to grow 靠雨水滋养的 sharplyadv.suddenly and by a large amount 明显地 oppose as opposed tovt.to disagree strongly with sb.s plan, policy, etc., and try to change it or prevent it from succeeding 反对（抗） used to make a contrast between two things 与相反（不同，相对） livelihoodn.the way you earn money in order to live 生活（计） channeln.a passage that water or other liquids flow along 沟渠；管道 reservoirn.a natural or artificial lake where water is stored before it is taken by pipes to houses, etc. 蓄水池， 水库 tankn.a large container for holding liquid or gas （储水）池 see sb. throughto give help and support to sb. during a difficult time 帮助（某人）度过（难关） spelln.a period of a particular kind of activity, weather, illness, etc., usually a short period 一段时间 on a grand (large/ small) scale大（小）规模（范围）地 techniquen.a special way of doing sth. 技术（巧，艺） doublev.to become twice as big or twice as much, or to make sth. twice as big or twice as much 翻倍 cultivationn.the preparation and use of land for growing crops 耕作 go roundto be enough for each person （在数量上）够分配
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