zeitgeist
noun /ˈzaɪtɡaɪst/
  /ˈzaɪtɡaɪst/
 [singular] (from German, formal)- the general mood or quality of a particular period of history, as shown by the ideas, beliefs, etc. common at the time时代精神;时代思潮 词源mid 19th cent.: from German Zeitgeist, from Zeit ‘time’ + Geist ‘spirit’.