For more than two decades, the International Space Station has orbited 227 nautical miles above Earth with more than 200 astronauts from 19 different countries enjoying stints aboard.
원문출처 : https://www.cnn.com/2021/04/29/world/iss-future-china-space-station-russia-us-intl-scn/index.html
원문출처 : https://www.cnn.com/2021/04/29/world/iss-future-china-space-station-russia-us-intl-scn/index.html