As the others said, when the two phrases are combined, it no longer simply means that the object is old. It's a way of emphasizing the age of the item. To say it's "old" can be anywhere from a few years old to millions of years old. To say that it's a billion years old is very precise.
But the phrase "the danger was old a billion years ago" means simply that: a billion years ago, the danger could already be considered old. This implies that the danger is older than 1 billion years, and probably older by a lot.
It's not a very clear phrase, nonetheless.
Thank you akaitsume1, Elizabeth sort of explained it to me but from reading your description, now I think I understand the effect and reasons behind it better.
" probably older by a lot":
hmm, that is curious, do you reckon that you feel it because of the scale being used is a billion years?
Would you get a different feeling if the sentence is "he snuffed a danger that was old 3 seconds ago but now animate and imminent" ?
I have to agree with akaitsume1. It seems like Bradbury was trying to say that the danger was old even a billion years ago, he just states it more concisely and poetic by leaving out the "even." I'm guessing since you are reading the likes of Ray Bradbury you are pretty far along on your English studies. How long have you been studying?
" How long have you been studying?"
Hmm, I started learning English quite few years ago, when I was a kid, but then I was never seriously into it, English was something I had to use and I was lazy (also I did have time).
So simply how long probably does not mean anything. And as to Ray Bradbury, he is perfectly fine for intermediate or even for primary English learners because well, anything is generally readable as far as that is not too boring:the main difficulty with learning a language is always the boredom not the mysteries.
I guess you are interested in the general level of proficiency in English that Japanese student reach at University or High school level?
It vary quite a lot but because there are annoying number of English teachers in Japanese High school who just cannot speak or write any English at all, the entire level is pulled down rather significantly: Close to my place, there is a collage(or so called University) and English Course graduates there had barely 750 average TOEIC score, I think 7 years old native speaker can get 950 over without any preparation
I do not know the national average but we generally we do not need any English in our daily lives and well I hope that explains everything.
He snuffed a danger that was old at a billion years.
In fact this implied assumption of "old at" is of accelerated aging, NOT in real time or slowed down. So it's a situation of "already" old at a billion years. How do you say this in Japanese ? 窶扼ナ?テア窶堙ィツ静オ窶堙昶?堋ス
I have been thinking about this "accelerated aging".
My guess so far is, "accelerated aging" or "impression of something being older than it should normally be" is derived from associated contexts invoked or general usages of a word "old" in combination with a word "at" : I got to here because even in Japanese, there is only one reason to specifically state that he/she is is old or young at a certain age that is to bring an attention to something unusual.
Such as:
窶啀窶啜ツ催寂?堙?、窶堋キ窶堋イ窶堋「窶堙
at age of 15, that is great
(something is great because it is done at a certain age or younger, otherwise the achievement might not be as praiseworthy?)
窶啀窶啜ツ催寂?堙??扼ナ?テア窶堙ィ窶堋セツ。
at 15, he is old
(He is
already old at 15 because unless otherwise often there is no point saying specifically "at 15" while there could be some exceptions like: Dogs grow old faster them men do. at 15, he(your male dog) is old ).
80窶堙?ステ。窶堋「窶堙
he is young at 80
(Same as above)
If anyone is kind enough to clarify these, that would be really nice.
Thank you for reading