时间:2018-12-08 作者:英语课 分类:背诵为王第二册


英语课

Lesson38 The Metric System

People in many countries use kilograms, centimetres, square meters,litres, and Celsius 1. These are all ways to measure things. They are allpart of the metric system.During the French Revolution (1789—1799) against the king, therevolutionary government started the metric system. Before that France haddifferent systems for measuring things in different parts of the country.Cloth makers 2 measured cloth with one system. Jewellers used another system. Carpenters used another. Other countries used other systems. Therevolutionary government wanted one international scientific system ofmeasurement. They asked a group of scientists and mathematicians 3 to inventit.The mathematicians and scientists decided 4 to use the numbers ten, hundred,and thousand for their system. Next they had to decide on a “natural”

length. They chose one ten-millionth of the distance from the Equator 5 tothe North Pole. They called this one meter. Then they chose one gram forweighing water in a cubic centimetre.Mathematicians and scientists worked on these problems for twenty yearsuntil they finally finished the complete system.The metric system was awonderful gift to the world. There are only a few countries that don't useit. The United States is one. The metric system is truly an internationalsystem.


carpenter     木匠

jeweller        宝石商

mathematician  数学家

Equator 赤道

cubic centimetre 立方厘米


公制

许多国家的人使用公斤、厘米、平方米、升和摄氏。这些都是测量的方法。他们是公制的一部分。

在反对君主的法国大革命(1789—1799)期间,革命政府开始使用公制。在此之前,在法国不同的地方使用不同的度量衡制。裁缝用一种度量衡量布,珠宝商使用另一种度量衡,木匠又用另一种,其他国家又用不同的度量衡。革命政府希望有一种国际性的科学的度量衡。他们让一群科学家和数学家发明一种这样的体制。

数学家和科学家决定在他们的度量衡制中使用数字十、百、千。

接下来他们必须决定一种“自然的”长度。他们选择了从赤道到北极距离的一千万分之一。他们将它称作一米。然后他们将一立方厘米的水的重量定为一克。

数学家和科学家共同研究了二十年最终完成了这个度量衡制。

公制是献给世界的一份很好的礼物。只有很少的几个国家不使用它。美国是其中之一。

公制的确是一个国际性的度量衡制。



1 Celsius
adj.摄氏温度计的,摄氏的
  • The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
  • The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
2 makers
n.制造者,制造商(maker的复数形式)
  • The makers of the product assured us that there had been no sacrifice of quality. 这一产品的制造商向我们保证说他们没有牺牲质量。
  • The makers are about to launch out a new product. 制造商们马上要生产一种新产品。 来自《简明英汉词典》
3 mathematicians
数学家( mathematician的名词复数 )
  • Do you suppose our mathematicians are unequal to that? 你以为我们的数学家做不到这一点吗? 来自英汉文学
  • Mathematicians can solve problems with two variables. 数学家们可以用两个变数来解决问题。 来自哲学部分
4 decided
adj.决定了的,坚决的;明显的,明确的
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
5 equator
n.赤道,(平分球形物体的面的)圆
  • Singapore is near the equator.新加坡位于赤道附近。
  • The United States is north of the equator.美国位于赤道以北。
学英语单词
3-butenyl
A-zone(A-horizon)
access-to-plant
algebra homomorphism
Aminex resin
angle measure
antivirbin
Antseranana
auto-decrementing
bananadine
barrel of puppethead
beat generator
ben hogans
beyond-the-object art
blind to the world
boy-wonders
butterfly style
cantilever gantry
carboniums
casesiumphotocell
catharosine
caution board
Chrome OS
clasterosporium eriobotryae hara
clutch disk
complete controllability
continuous wave generator
conversion scales
cts-v
curvemeter
dental vessel
descendence
deuterium oxide
Eadmund I
enstamped
Entosiphon
ethyl phenylbarbiturate
exsudation cyst
FALCIDIAN LAW
firenadoes
Flame Wars
genus kennedyas
glatthaar
graftling
hair-pin
Impatiens paradoxa
inversion factor
ir (infrared)
japopinic acid
laccifer lacca parasite
land jobber
liopelmas
locustae
low-temperature production
made an impression on
March of Time
mass rapid transit systems
MBR-O (memory buffer register,odd)
medium ring
minifloppy mass storage
morbillivirus canine distemper
naupathia
no message
non-linear semi-group
Osiander's sign
oxalic acid poisoning
pantaloons
Pedro Ximenez
perfect electrolyte
Pierry
plantier
post-deng
pylie
red-fin pargo
Rhinopteridae
safeguard practice
sandry
schistosomiasis mekongi
secret harbour
shellee
sinter cake
sky surfing
soda sanidinire
software company
solid fat index
stipulaceous
supersonic combustion ramjet (scramjet)
supplanters
taper-thread
thermo-magnetic alloy
transphosphorylate
twelt
unifunctional circuit
universal judgment
vacuum-cleaner alloy
wasband
watch your language
white-dot generator
wonks
yashiki
year-high