state——陳述，國家，狀態(tài)

emperor皇帝

fortification n. 碉堡，防御工事；強(qiáng)化，設(shè)防

empire帝國

borders邊疆

protect....from 保護(hù)xx不受xx

Mythology myth

man-made=Artificial人工的

associated with=related to=have something to do with.相關(guān).

originated in起源于

marvel奇跡=wonder

claim言論

contradicted by

assumption假設(shè)

orbit軌道

construction=structure結(jié)構(gòu)，建造