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1. Oxford American Dictionary

   ultrasonography

   • IPA[ˌəltrəsəˈnäɡrəfē]

   美式

   • n.
     a technique using echoes of ultrasound pulses to delineate objects or areas of different density in the body.

   • noun: ultrasonography

2. • 更多解釋

   ultrasonography

   • IPA[ˌʌltrəsəˈnɒɡrəfi]

   英式

   • n.
     a technique using echoes of ultrasound pulses to delineate objects or areas of different ...

   Oxford Dictionary