If they have time, astronauts and cosmonauts will look to plug the leak or close the hatch to the leaking section of the station. (That is how they dealt with a minor leak in the station’s PrK module for a number of years, and it basically worked.) Remember, though, that this is the worst-case scenario, and our crew will run into a hard deadline. Once pressure falls to around 490 mm Hg, NASA says, critical systems risk breaking down. Astronauts could suffer hypoxia, oxygen deprivation so debilitating they could become delirious. It will be a heart-wrenching call, but if nothing else can be done, the crew will need to go to their crew vehicles and leave the ISS.
据北京“小天才圈”资深玩家陈曦（化名）介绍，圈内有5000余名活跃用户，多为11岁至17岁的学生，这个社交圈形成了一套精心设计的“混圈规则”。“入圈”需设定两个字的独特圈名，随后可在平台分享生活点滴，吸引具有相同爱好的好友进行互动；若想提升知名度或影响力，需每日经营主页并与好友动态互动。
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