Calorie
n.
a unit for measuring the amount of energy that food will produce 卡路里
livestockቤተ መጻሕፍቲ ባይዱ
n.
animals such as cows and sheep that are kept on a farm 家畜， 牲畜
domestic
output
n.
the amount of goods or work produced by a person, machine, factory, etc. 产量
irrigation
irrigate
n.
v.
supply of water to land or crops 灌溉
to supply land or crops with water 灌溉
used to make a contrast between two things 与……相反（不同，相对）
livelihood
n.
the way you earn money in order to live 生活（计）
channel
n.
a passage that water or other liquids flow along 沟渠；管道
densely/heavily populated
人口稠密的
current
adj.
happening or existing now 现在（行）的，当前的
consumption
n.
the act of using energy, food, or materials; the amount used 消耗（费）， 消耗量
device
n.
a machine or tool that does a special job 装置，设备
pump
n.
a machine that is used to force liquid, gasor air into or out of sth. 泵，抽水机
tap
vt.
to draw liquid 抽取（出）
layer
n.
a level, or part, within a system or set of ideas 层（次）
in theory
在（从）理论上
sodden
adj.
very wet and therefore heavy 浸润（透）的
needless to say
used to emphasize that the information you are giving is obvious 不用说
run out of
to use up or finish a supply of sth. 用光， 耗尽
economist
n.
a person who studies or writes about economics 经济学家
comprehensive
adj.
including all, or nearly all, elements or aspects of sth. 综合（性）的，全面的
capital
n.
a large amount of money that is invested or is used to start a business 资本（金）
modest
adj.
not very large, expensive, important, etc. 不太大的，适中的
rain-fed
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……
import
n.
a product or service that is brought into one country from another 进口货物（商品）
adv.
almost not 几乎没有
adequate
adj.
enough in quantity or of a good enough quality for a particular purpose 足够的，充分的
supply
n.
an amount of sth. that is provided or available to be used 供给（应）
adj.
connected with the home or family 家（庭，用）的
account for
to form a particular amount or part of sth. （总共）占
fraction
n.
(a ~ of) a small part or amount of sth. （小）部分
unable to do anything to protect yourself from sb. or sth. 完全受……支配（控制），任由……摆布
imperfect
adj.
containing faults or mistakes; not complete or perfect
不完善（美）的
deploy
v.
to position people or equipment ready for use 部署，配置
yield
v.
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
adj.
fed by rain to grow 靠雨水滋养的
sharply
adv.
suddenly and by a large amount 明显地
oppose
as opposed to
vt.
to disagree strongly with sb.'s plan, policy, etc., and try to change it or prevent it from succeeding 反对（抗）
n.
a large formal meeting where people discuss important matters such as business, politics, or science 会议
underway
adj.
happening now 进行中的
reveal
vt.
to make sth. known to sb. 披（揭）露
along with
together with sb. or sth. else 与……一起
odd
adj.
happening or appearing occasionally; not very popular or frequent 少见的，偶尔的
mercy
at the mercy of
n.
a kind or forgiving attitude 怜悯
cultivation
n.
the preparation and use of land for growing crops 耕作
go round
to be enough for each person （在数量上）够分配
on a grand (large/ small) scale
大（小）规模（范围）地
technique
n.
a special way of doing sth. 技术（巧，艺）
double
v.
to become twice as big or twice as much, or to make sth. twice as big or twice as much 翻倍
roughly
adv.
approximately but not exactly 大概（约）
basin
n.
an area of land drained by a large river with other rivers or streams running into it 盆（洼，泊）地
barely
grim
adj.
unpleasant and depressing 令人担忧（发愁）的
statistics
n.
(pl.) a systematic collection, or presentation, of numerical information 统计（数字，资料）
litre
n.
(AmE: liter) the basic unit for measuring liquid in the metric system 升
afford
vt.
to have enough money or time to be able to buy or to do sth. 买（负担）得起
make use of
to use sth./sb., especially in order to get an advantage 利（使）用
institute
n.
研究所（院）
aid
n.
help that you need to do a particular thing 帮（援）助