the Middle Ages

US /ðə ˌmɪd.əl ˈeɪ.dʒɪz/
UK /ðə ˌmɪd.əl ˈeɪ.dʒɪz/
"the Middle Ages" picture
1.

thời Trung Cổ

the period of European history from the fall of the Roman Empire in the West (5th century) to the fall of Constantinople (1453), or, more narrowly, from c. 1000 to c. 1453

:
Life was very different during the Middle Ages.
Cuộc sống rất khác biệt trong thời Trung Cổ.
Many castles were built in Europe during the Middle Ages.
Nhiều lâu đài được xây dựng ở châu Âu trong thời Trung Cổ.