谁知道a dog day的意思?--It's very hot today.--Yes,it's a dog day.

谁知道a dog day的意思?--It's very hot today.--Yes,it's a dog day.
谁知道a dog day的意思?
--It's very hot today.
--Yes,it's a dog day.

谁知道a dog day的意思?--It's very hot today.--Yes,it's a dog day.
dog-days n.[pl.]
三伏天, 大热天; 无所作为的时期, 无精打彩的日子
关于“dog”的谚语
Barking dogs seldom bite.
吠犬不咬人（意指：对于高声发出恐吓,或惯于大声吼叫的人,勿须当真）.
Every dog has his day.
凡人皆有得意日（意指：大家都有走运的一天）.
Dog does not eat dog.
同类不相残；同室不操戈.
a cat-and-dog life
争争吵吵的日子
Dog does not eat dog.
同类不相残,同时不操戈
Dumb dogs are dangerous.
不叫的狗咬人
Give a dog a bad name and hang him.
谗言可畏,欲加之罪,何患无辞
go to the dogs
每况愈下
hang-dog look
愁眉苦脸
If the old dog barks, he give the counsel.
老狗叫,是忠告.
Love me, love my dog.
爱屋及乌
He is a lucky dog.
他是个幸运儿.
lead a dog's life
过穷困潦倒的日子
not have a dog's chance
毫无机会
top dog
当权派；头儿
treat sb. like a dog
不把某人当人看
a hunting dog
猎犬
a lazy dog
懒汉
a gay dog
一个快乐的人
a dirty dog
下流坯
dog-days n.[pl.]
三伏天, 大热天; 无所作为的时期, 无精打彩的日子
A good dog deserves a good bone.
[谚]好狗应该啃好骨头, 有功者受赏.
A living dog is better than a dead lion.
[谚]死狮不如活狗.
A staff [stick] is quickly [soon] found to beat a dog with.
[谚]欲加之罪, 何患无辞.
An old dog barks not in vain.
[谚]老狗不乱吠; 老狗 一吠, 就得小心.
An old dog will learn no new tricks. (=You cannot teach old dogs new tricks.)
[谚]老狗学不了新把戏; 老年人很难适应新事物.
as [like] a dog with two tails
非常开心[高兴]
Barking dogs seldom bite.
[谚]爱叫的狗 不咬人; 咬人的狗不露齿.
be (old) dog at (a thing)
对...有经验; 对...很内行
Beware of a silent dog and still water.
[谚]提防不吠的狗, 小心 静止的水.
come like a dog at a whistle
一呼即来
Every dog has his day.
[谚]凡人皆有得意日.
Every dog is a lion at home. [Every dog is valiant at his own door.]
[谚]狗是百步王, 只在门前凶.
Fight dog, fight bear.
[谚]打个青红皂白, 一决雌雄.
Give a dog a bad [an ill] name(and hang him).
[谚]一旦给人加一个坏名声, 他就永远洗刷不掉; 人言可畏.
It is ill to waken sleeping dogs. [let sleeping dogs lie; don't wake a sleeping dog.]
别多事, 别惹麻烦.
lead a dog's life
过着牛马不如的生活
love me, love my dog.
[谚]你若把我当朋友, 也要把我的朋友当朋友; 爱屋及乌.
Scornful[Hungry] dogs will eat dirty puddings.
[谚]人到危急时, 平时所不屑做的也要做; 急不暇择, 饥不择食.
teach an old dog new tricks
使守旧的人接受新事物
teach the dog to bark
教狗怎么叫(意指多此一举)
The dog returns to his vomit.
狗回头吃自己吐出来的东西; 重犯旧日罪恶.
A living dog is better than a dead lion.
一条活狗胜过一头死狮.
The cat and dog may kiss, yet are none the better friends.
猫狗可以相吻,但不会成为好友.
Dumb dogs are dangerous.
不叫的狗咬人
Give a dog a bad name and hang him.
谗言可畏,欲加之罪,何患无辞
http://www.hxgs.net/cgi-bin/topic.cgi?forum=6&topic=288

不知道

a dog day就是酷热难当的意思。http://lib.verycd.com/2004/03/18/0000007135.html
参考一下

糟糕的一天

对，是大热天的意思，又长知识了
http://en.wikipedia.org/wiki/Dog_Days

简单的说就是 狗日

说的很好，谢谢

Dog Days
From Wikipedia, the free encyclopedia
Jump to: navigation, search
For Dog Days, the Swedish 1970 movie, see Rötmånad (film).
The Dog Days or the dog days of summer...

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Dog Days
From Wikipedia, the free encyclopedia
Jump to: navigation, search
For Dog Days, the Swedish 1970 movie, see Rötmånad (film).
The Dog Days or the dog days of summer are typically the hottest and most humid times of the year. They are a phenomenon of the northern hemisphere where they usually fall between July and early September but the actual days vary greatly from region to region, depending on latitude and climate. Dog days can also define a time period or event that is very hot or stagnant.
Contents [hide]
1 The name
2 Southern hemisphere
3 Further north
4 Roman name
5 Other
6 See also

[edit] The name
The dog days get their name because they occur during the time the star Sirius, known as the Dog Star (and the brightest star of all as seen from Earth, except the Sun), rises before the Sun after being lost in the sun's glare during the spring and early summer. This is also attested to by the fact that the dog days are called la canícula in Spanish, from the Latin canis. The ancient Egyptians observed that the annual flooding of the Nile Delta would typically occur shortly after the star returned to view immediately before sunrise, taken to be around mid-August in the current calendar.
[edit] Southern hemisphere
By contrast, "dog days" as defined herein do not occur at all in the Southern Hemisphere, for there even when the star is least favourably placed for viewing (around July 1), it will be briefly visible both in the east before dawn and again in the west after dusk. Throughout most of Antarctica Sirius is circumpolar; that is to say, constantly above the horizon.
[edit] Further north
The further north one goes, the longer Sirius remains invisible each year, and beyond a latitude of approximately 74°N (to the north of any part of mainland Europe or North America) the star never appears above the horizon at all, making the colloquial, modern use of the term "dog days" to refer to the hot days of summer less than universally accurate.
[edit] Roman name
The term itself was coined by the ancient Romans, who called these days caniculares dies (days of the dogs) after the constellation of Canis Major, (bigger dog) within which Sirius (α Canis Majoris) is found. As the hottest and most humid days of summer generally coincided with the period where Sirius rose/set with the sun, they believed that heat from Sirius was increasing the heat of the sun.
[edit] Other
Incidentally, dog meat is a food traditionally eaten during the hottest days of the year in South Korea.
The phrase is mentioned in the short story "The Bar Sinister" by Richard Harding Davis. The main character, who is a street dog, explains "but when the hot days come, I think they might remember that those are the dog days, and leave a little water outside in a trough, like they do for the horses."
In 2005 the dog days fell between July 3 and August 11, according to the Old Farmer's Almanac.
According to the 1552 Book of Common Prayer the “Dog Daies” begin on 6 July and end on 4 September.
In recent years, the phrase "Dog Days" or "Dog Days of Summer" have also frequently be used in reference to the American stock market(s). Typically, summer is a very slow time for the stock market. Also, poor performings stocks with little future potential are frequently known as "dogs."
It could simply be that the "Dog Days of Summer" are the most hot and humid, where common references show people panting much like a dog would, and where the weather is seen as so hot and humid work outdoors is undesirable, like a lazy dog.

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