the great wall長城

one of+名詞復數(shù)

，。。。。。，插入語

states國家、省份

state陳述 state 國家、狀態(tài)

dynasty朝代

emperor--皇帝 king

have sth. done

fortification防御工事

empire帝國

invasion入侵

borders邊境

protect ...from....保護什么不受侵害

the parents protect us from harmful content on the internet

invade

myths傳說

Mythology

structure建筑

with用什么

naked eye肉眼

man-made=artificial

associated with=related to =have something to do with

ledend =myth傳說

originated in起源于

marvel=wonder

claim

be contradicted by反駁

assumption假設

orbit軌道

in this regard就這點而言

constructions=structure