将相机对准白色背景，然后用放大镜观察这种现象。

Point the camera at a white background, and observe this phenomenon with a magnifying glass.

youdao

我必须找到放大镜，再细细地观察。

I must find my magnifying glass and inspect it properly.

youdao

我必须找到放大镜，再细细地观察。

I must find my magnifying glass and inspect it properly.

youdao