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
acephaetmet
acer nikoense maxim
alarm acknowledged
anergasia
arc light projector
average density
battery/electric locomotive
below - the - line promotion
buy money
buying out
cancelling
cancer patients
capillary energy
chrip
clean air outlet
clopane
computational procedure
cybercontroversies
cyclic service
death
deudorix epijarbas menesicles
device base control block
domestic trade
DP (difference of pressure)
Duverney's glands
electric installation drawing
electro-sensibility
erythema chronicum figuratum melanodermicum
FDV (floating divide)
finned array
flammable fluid code
friction trip
g.728
gachots
germanium photosensitive resistance
guilmette
Hudson Falls
HYCO
IDFT (inverse discrete Fourier transform)
implodes
Institute Cargo Clause
Kaisersesch
Komsannyǒng
Kuilsrivier
lacerated foramen
laprafylline
lesionless
Levanger
license plate number
Limburgish
lower-pair
management report system
membrane biophysics
microcal
Microscopii
Moulinette
nanowatt circuit
nephrocarcinoma
night-biters
normally close valve
nuclear hegemony
ocular hair
ollila
opposing spine
paint job
partly paid-up share capital
PHARMACICHTHYIDAE
pikel
planting body
plastic clay
pole radiation
polyphenotypic
positive geared feed
pre-negotiation
precision capacitor
preclinic
production esthetics
Protoselachii
radiocirculography
rail accident
reimpressed
robot actuator
SCIC (semi-conductor integrated circuit)
self-synchronous repeater
sheepfuckers
social parasitism
solid state ionics
spiral-spring
splutters
St-Ybars
The usher showed us to our seats
treebank
triplex glass
true to one's salt
unlikelinesses
varus deformity of heel
vitreolysis
water-bearing explosive
wireless data link
Zibyugon
zone time system