- [uncountable]
sound that is higher than humans can hear 超声 - [uncountable, countable]
a medical process that produces an image of what is inside your body 超声波扫描检查 Ultrasound showed she was expecting twins. 超声波扫描显示她怀了双胞胎。 🔊🔊 an ultrasound scan 超声波扫描 ultrasound scanning 超声波扫描