约翰-惠勒和诺贝尔奖得主理查德-弗雷曼，他们基于物理体系中时间应该可以倒流的想法，提出了一种反物质理论。
One theory about why antimatter exists was developed by John Wheeler and Nobel laureate Richard Feynman based on the idea that physical systems should be time-reversible.
约翰·洛吉·贝尔德于1928年制造出第一台彩色电视机，但直到1938年第一个彩色电视节目才播出。
John Logie Braid constructed the first colour TV in 1928, but it was not until 1938 that the first colour TV programme was broadcast.
在1926年，他进入贝尔法斯特艺术学校，并在1928年到对向斯莱德学校在伦敦，他在那里研究下，亨利·唐克斯和伦道夫施瓦贝，和今后一个时期的共同工作室，与约翰·卢克。
In 1926 he entered the Belfast School of Art, and in 1928 went on to the Slade School in London, where he studied under Henry Tonks and Randolph Schwabe, and for a time Shared a studio with John Luke.
加拿大外长约翰·贝尔德大步走上讲台，他穿的棉质西装很适合班加西下午的窒热天气，这跟他为这个场合佩戴反对派标志的别针一样合适。
Canadian Foreign Minister John Baird strides to the podium. His cotton suit is as befitting the heat of a Benghazi afternoon as his rebel lapel pin is of the occasion.
如果当时约翰·贝尔德没发明电视的话，现在很多小孩不知如何度星期六晚上了。
Had John Baird not invented TV, a good many kids wouldn't know how to spend Saturday evenings.
如果当时约翰·贝尔德没发明电视的话，现在很多小孩不知如何度星期六晚上了。
Had John Baird not invented TV, a good many kids wouldn't know how to spend Saturday evenings.
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