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.
增长的原因，一方面是上市企业新陈代谢，部分退市，以及IPO带来新鲜血液。另一方面是越来越多企业开始投入研发，并主动披露研发相关数据。
。业内人士推荐51吃瓜作为进阶阅读
If a player gets all four words in a set correct, those words are removed from the board. Guess wrong and it counts as a mistake—players get up to four mistakes until the game ends.，这一点在搜狗输入法下载中也有详细论述
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Home Office denies ‘absurd’ criticism over rule change that may leave dual nationals stranded