Even so, the shift in the centre of gravity to older age groups is bound to have a profound effect on societies, not just economically and politically but in all sorts of other ways too.
出自-2010年12月閱讀原文
For the past two years, Gordon's students have been studying ways to kill bacteria in zero gravity, and they think they're close to a solution.
2019年高考英語全國卷2 閱讀理解 閱讀D 原文
If you leave your arms out, they float free in zero gravity, often giving a sleeping astronaut the look of a funny ballet dancer.
2015年高考英語湖北卷 閱讀理解 閱讀D 原文
With no gravity, it's just as easy to pedal violently.
2015年高考英語湖北卷 閱讀理解 閱讀D 原文
Without gravity to help circulate air, the carbon dioxide you exhale has a tendency to form an invisible cloud around you head.