astronomical

形容词 astronomical:

1. relating or belonging to the science of astronomy
   同义词：astronomic
2. inconceivably large
   同义词：astronomic, galactic

1. The price of this gem is expensive -- as much so as astronomical figures.
   这个宝石的价格十分昂贵－－简直是个天文数字。
2. His wife was astonished at the astronomical sum of money he had spent.
   他的妻子被他花的天文数字的钱款惊呆了。
3. He was too poor to buy an astronomical telescope.
   他太穷了，买不起天文望远镜。

as.tro.nom.i.cal

adj.（形容词）
Abbr. astron.Of or relating to astronomy.
缩写 astron.天文学的：属于或关于天文学的
Of enormous magnitude; immense:
巨大的：体积巨大的；庞大的：
例句：
an astronomical increase in the deficit.
赤字的巨大增长

【引伸】
as.tronom.ically
adv.（副词）