Scientists Say: Ultrasound
This word is more than a technology; it’s sound in a very high frequency
![860-header-ultrasound.gif](https://www.snexplores.org/wp-content/uploads/2019/11/860-header-ultrasound.gif)
This is an ultrasound image from inside a pregnant woman’s uterus. If you look carefully, there’s not one baby in there, but two! This woman was pregnant with twins.
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