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If you're keen to earn a bit of extra cash while potentially saving this planet from alien infection, NASA has an opening for you. 如果你热衷于赚点外快，同时有保护地球免受外星生物感染的潜能，那美国航空航天局可以为你提供一份工作。 The US space agency is looking to hire a Planetary Protection Officer who will both protect our planet from the Martians and make sure that humans venturing into space do not contaminate other worlds. 美国宇航局希望聘请一名行星保护官，他既要保护我们的行星免受火星生物的侵袭，又要确保人类进入太空时不会污染其他世界。 | 
