长白山

Cháng bái shān Changbai or Baekdu mountains 白頭山|白头山, volcanic mountain range between Jilin province and North Korea, prominent in Manchu and Korean mythology

供求

gōng qiú supply and demand (economics)

世界

shì jiè world; CL:個|个[ge4]

电子

diàn zǐ electronic; electron (particle physics)

版

bǎn a register; block of printing; edition; version; page

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