This is because they, and only they, can change the reflection in the mirror.

这是因为，它们，也只有它们，才能改变镜子里的反射。

youdao

youdao

The ambient reflection only reacts to ambient light; thus, using an omnidirectional light has no effect.

环境反射仅对环境光起作用，因此，使用全向光是无效的。

youdao

You cannot just tell the computer to enhance that or can you clean that up and then magically use zoom in not only on the image but also on the reflection of the victim in someone's eyeball.

你不能直接要求计算机增强,这张图片或者修复它,然后期待计算机很神奇地放大图片,以及死者的眼珠的反光。

哈佛公开课 - 计算机科学课程节选

But that was only the reflection from one little corner of the mirror.

FORBES: Negotiating with the Woman in the Mirror

"What my colleagues and I have done for Malaysian workers over the past four years are only a reflection of what is to come and implemented in the next five years, " local media quoted him as saying on 1 May.

BBC: Profile: Najib Razak

She smiled, sitting at the head of the table, facing the window, where she could see only her own reflection.

NEWYORKER: Or Else