/ˌæs·trəˈnɑm·ɪ·kəl/
connected with astronomy:
(also astro·nom·ic) (informal) (of an amount, a price, etc. 数量、价格等) very large 极其巨大的
the astronomical price of land for building
建筑用地的惊人价格
The figures are astronomical.
这些都是天文数字。
adverb
Interest rates are astronomically high.