而“精神圈”的存在则是“人类纪”的重要表征。
The existence of "spiritual circle" is an important characteristic of the age of human sapiens.
人类已迈入21世纪。
人类即将进入21世纪第二个10年。
Mankind is about to enter the second decade of the 21st century.
人类最早居住时间：大约是公元前8世纪到公元10世纪。
Inhabited: Approximately eighth century B.C.to 10th century A.D..
人类社会已跨入21世纪的大门。
人类社会已经进入了21世纪。
能源问题将是21世纪人类所面对的巨大挑战。
Human beings are confronted with the great challenge for the energy problem in 21 century.
当21世纪到来时，缪人类正步入一个崭新的时代。
When 21 century comes, human goose - step enters a brand - new period.
人类文明的脚步已经踏入21世纪。
21世纪，人类已进入知识经济时代。
互联网是人类20世纪最伟大的基础性科技发明之一。
The Internet is the greatest fundamental inventions in science and technology of the 20th century.
直到19世纪初，人类才知道热能是什么。
Not until the early years of the 19th century did man know what heat is.
时代变迁，人类社会已步入21世纪。
As time goes by, human society has stepped into the 21st century.
这是人类社会在20世纪取得的最伟大的进步。
That was the greatest progress made by human society in the 20th century.
二者将在21世纪极大地影响人类的生活。
Both will influence radically the life of human beings during the XXIth century.
21世纪的社会老龄化是人类历史上前所未有的。
The social aging problem in the 21st century is unprecedented in the history of mankind.
21世纪人类面临的威胁不是单一的。
电视是20世纪人类伟大的发明之一。
The television was one of the 20th century humanity's great inventions.
21世纪是人类开发和利用地下空间的世纪。
21 centuries is mankind development and make use of the underground space of century.
21世纪是人类开发和利用地下空间的世纪。
21 centuries is mankind development and make use of the underground space of century.
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