Put the CD into the disc tray, then close the tray.

把CD放入光碟托盘，然后关闭托盘。

youdao

Diffraction from these features (so very close to the wavelength of light) is what gives CD disks their beautiful colors.

由于上述特征形成的衍射，使光盘呈现漂亮的颜色。

youdao

Diffraction from these features (so very close to the wavelength of light) is what gives CD disks their beautiful colors.

由于上述特征形成的衍射，使光盘呈现漂亮的颜色。

youdao