时间:2018-12-03 作者:英语课 分类:标准美语发音的13个秘诀 CD4


英语课

[00:03.27]Part 1 American Mosaic 1

[00:08.20]Text 1 Leap Year

[00:29.78]February has an extra day this year because the year 2,000 is a "leap year".

[00:36.57]That means that one day is added to the calendar.

[00:40.86]That day is February twenty-ninth, also known as "Leap Day".

[00:47.44]Leap days were added to some years to make the calendar year

[00:52.43]nearly the same as the time it takes the Earth to travel around the sun.

[00:57.99]That is exactly 365 days, 5 hours, 48 minutes and a little over 45 seconds.

[01:08.88]So our calendar year is either 365 days in non-leap years or 366 days in leap years.

[01:08.94]The leap year was first used in the Julian Calendar 2,046 years ago.

[01:16.64]It was developed by the Roman Emperor Julius Caesar.

[01:21.16]In the Julian calendar, each year contained twelve months

[01:26.28]and had an average of 365 and one-fourth days in a year.

[01:33.07]This was done by having three years of 365 days and one year of 366 days: a leap day every four years.

[01:47.13]However, after Julius Caesar died,

[01:50.63]it was discovered that the priests 2 who wrote the yearly 3 calendars had been adding leap days every three years instead of every four.

[02:00.71]As a result, no more leap days were added for many years.

[02:06.54]By 1582, Pope 4 Gregory the Thirteenth recognized that the calendar had too many leap days.

[02:16.10]If this continued, the seasons would start on different days each year.

[02:22.71]Over time,for example, this would cause the holiday of Easter to move closer and closer to Christmas.

[02:32.16]So Pope Gregory changed the calendar.

[02:35.69]It became known as the Gregorian Calendar. It is the one that is used most today.

[02:43.60]Pope Gregory's calendar continued to have leap days every four years, with an exception 5.

[02:51.21]Years ending in zerozero were leap years only if they could be divided by 400.

[02:59.83]So this year is a leap year, but 1900 was not.

[03:05.76]February 29, 2000 will be the first leap day in a century year since the year 1600.



1 mosaic
n./adj.镶嵌细工的,镶嵌工艺品的,嵌花式的
  • The sky this morning is a mosaic of blue and white.今天早上的天空是幅蓝白相间的画面。
  • The image mosaic is a troublesome work.图象镶嵌是个麻烦的工作。
2 priests
n.(基督教和罗马天主教的)神父( priest的名词复数 );牧师;(非基督教会的)教士;祭司
  • the ordination of women priests 女司祭的授职礼
  • The clergy remain divided on the issue of women priests. 在女性教士的问题上,牧师们意见不一。 来自《简明英汉词典》
3 yearly
adj.每年的,一年一度的;adv.一年一次地
  • The flower show is a yearly event in our town.我们镇上的花展一年举行一次。
  • The yearly rental of her house is 2400 yuan.她这房子年租金是2400元。
4 pope
n.(罗马天主教的)教皇
  • The Pope is the spiritual leader of many Christians.教皇是众多基督徒的宗教领袖。
  • The Pope is the supreme leader of the Roman Catholic Church.教皇是罗马天主教的最高领袖。
5 exception
n.例外,除外
  • Everyone should keep discipline and you are no exception. 每个人都应该遵守纪律,你也毫无例外。
  • There's an exception to every rule. 每项规则均有例外。
标签: 美国英语听力
学英语单词
8 VSB
a.w.o.l.
accompany by
alim
alkyl cyanide
Amboinese, Ambonese
Amherst, Mt.
ammonia soda process
ante-alar
archaising
assignment document
auto excitation
bathymetric data
bell-type generator
business knack
check cleaning
china cabinets
Chorpyriphos
cobaltous pyroarsenate
communication task
Cornellian
crossbowman
cylindrical shaft retaining wall
daals
De-Grey
decompartmentalizes
degnan
dependent relations
diisopropylamine ascorbate
distearoylphosphatidylethanolamine
doorplate
effective-tension
eligible queue of tasks
Elschnig's pearls
endophagic
equality constraint
euglena spirogyra spirogyra
Favositella
fight - or - flight response
Flash Price
fluted roll drill
fovea dentis
Fritillaria imperialis
front idler sprocket
gamboge
genus Liatris
great gandak (gandak r.)
group theories
ice deviation risk
impestered
infringe
initiator program
intermediary water
international standard industrial classification (isic)
inverting input
iris-coupled filter
jeit
land for building
levelling color
limit-value monitor
lion-hunter
loaded dice
longitude by lunar distances
Luciocephalidae
margo dexter
Mattole
mensing
mil
mold parting agent
naphtine (naphthine)
nectrianin
open firing point
photon population
pilot cell
plain bar type gage
posners
Profichet's
pteropid
qualms of illness
R (Rockwell hardness)
resolution limit
revealed preference
saddle-bow
Shishmarëva, Ostrov
shrinking transformation
snap impression
snewing
spacing and population tests
statute-book
succincter
supplementary financing facility
synchroprobe
tenside
triangular grafting
Ul-do
underwater operation ship
ungerson
unhydrolyzable
ventilating furnace
Verkhoyansk Mountains
Veronica filipes
x-ray detectable surgical gauze