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ultrasound

['ʌltrəsaʊnd]

释义

n.超声，超声波
ultrasonic waves at frequencies above the audible range (above about 20 kHz), used in cleaning metallic parts, echo sounding, medical diagnosis and therapy, etc.

例句
Marshall: You know what they're doing in there right now? They're watching Claire's ultrasound video and I swear to god even the baby looks bored. (How I Met Your Mother)
马修：你知道他们现在在干嘛吗？他们在看克莱尔的超声波录像带，我相信连肚里的婴儿都觉得无聊了。（老爸老妈的浪漫史）