1 sentence

1. 示波器上显示出一段极其规律的声波图像。

   shì bō qì shàng xiǎn​shì chū yī duàn jí​qí guī​lǜ de shēng​bō tú​xiàng.

   The oscilloscope showed an extremely regular sound wave pattern.

   Source: Dong Chinese Dictionary