評論
打印
It's as if the whole of America
就好像整個美國
was getting bigger and bigger every day.
日益增大
You'd think it would be impossible to keep the map up to date.
你可能會認為地圖永遠趕不上變化
But cosmologists take everything into account,
但是宇宙學家考慮周全
by using careful measurements of the expansion rate.
將仔細測量而得的膨脹速率納入其中
It works like the scale factor on any road map.
工作原理和公路圖上的比例尺類似
Imagine the United States is doubling every day.
假設美國土地面積每天翻番
You wouldn't want to make a new map every day,
你可不會希望每天制作新地圖
you wouldn't draw a new map.
太不現實了
All you would have to do really is change the legend.
你只需修改一下比例尺就行
Instead of one mile between tick marks,
一刻度現在代表1.6公里
the next day would be two miles,
第二天它就代表3.2公里
the next day would be four miles.
第三天就代表6.4公里
And that scale, changing on the side in your legend,
圖例中的比例發生變化
would completely account
如實反映了
for the fact that the States kept doubling.
土地面積不斷翻番的事實
And so you could keep your originally drawn map.
這樣地圖本身不用做任何更改
The map of the observable universe doesn't change
除了比例系數 可觀測宇宙的星圖
except for the scale factor.
并沒有發生變化
重點解釋：
1.as if 猶如，好像
例句：She ran as if the Old Boy were after her.
她跑得飛快好像魔鬼在追她似的。
2.instead of 代替；而不是 ...
例句：I gave him advice instead of money.
我給了他忠告，而不是錢。
3.except for 除 ... 之外； 要不是由于
例句：The room was empty except for a broken wood chair.
屋子里除了一張破木椅什么都沒有。
