millennium
a period of one thousand years, usually calculated from the year of the birth of Jesus Christ
千歳
[名詞]
solstice
either of the two times of the year when the sun reaches its farthest or closest distance from the equator
夏至(夏至、冬至)
[名詞]
lunar year
a period of 12 lunar months (the time span between two new moons), which is around 354 days
旧暦
[名詞]
civilization
a society that has developed its own culture and institutions in a particular period of time or place
文明
[名詞]
medieval
belonging or related to the Middle Ages, which was the period between the 5th and 15th centuries
中世の
[形容詞]
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