sonic barrier

基本解釋

Breaking the sound barrier generates a sonic boom, so supersonic travel is heavily restricted over land.
打破音障時(shí)會(huì)産生音爆，所以超音速飛行在陸地上空有諸多限制。
U. S. Navy photographer with lightning-fast reflexes captured this image of a fighter plane blasting through a "sonic boom cloud" as the jet broke the sound barrier.
一位美國(guó)海軍攝影師敏捷地捕捉到了戰(zhàn)鬭機(jī)在突破音障時(shí)，産生“音爆雲(yún)”的圖片。
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