Other researchers, meanwhile, have beenpondering what to do if an asteroid is detected that is indeed on a collisioncourse with Earth.
同时,其他研究人员一直在思考这样一个问题,如果发现一颗小行星的确将与地球发生碰撞,我们又该采取怎样的措施。
Other researchers, meanwhile, have beenpondering what to do if an asteroid is detected that is indeed on a collisioncourse with Earth.
同时,其他研究人员一直在思考这样一个问题,如果发现一颗小行星的确将与地球发生碰撞,我们又该采取怎样的措施。
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