| 单词 | sonic barrier |
| 例句 | Sound was initially dismissed as a possible deterrent when research revealed fishes become acclimated to constant tones and would eventually move through a sonic barrier. Great Lakes Defenders Have a Shocking Idea to Stave Off Invasive Carp 2017-09-20T04:00:00Z Boom isn’t the only player in the race to bring air passengers pass the sonic barrier once more. This Aviation Startup Aims to Make Flights Supersonic Again 2016-11-16T05:00:00Z But if the Liberal wins, it's going to break the psychological sonic barrier in Calgary. Calgary by-election proving thorny for Canada's Harper 2012-11-22T23:18:11Z An accelerating, effortless flight, a faint tremor as they passed the sonic barrier, then no sensory impressions at all. The Mighty Dead As a natural result of this, the first serious rocket experiments in this country were labeled screwball stunts, about on a par with efforts to break through the sonic barrier. The Flying Saucers are Real |
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