sound barrier
(uncountable, botany) Calamus scipionum, a species of thick rattan climbing palm native to Southeast Asia; its material; (inexact) closely similar species and their material.
to breathe out or upon.
(uncountable) Sonic barrier, the sudden increase in drag (resistance) and other effects experienced by moving objects when their speed approaches that of sound or becomes supersonic (which used to be considered a barrier to higher speeds).
plural of opéra comique
試験飛行中、その実験ジェット機は音速の壁を突き破り、砂漠に衝撃波を送り出して技術者たちを興奮させた。
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