8 balancing head is not opposite photoelectric light paper, photoelectric head mirror, photoelectric position deviation caused by angle.

动平衡机光电头未对正反光纸，光电头镜面模糊，光电头位置偏斜引起角度偏移。

youdao

Using a mirror, check your head for hair loss.

照一下镜子，看下你的头上有没有掉头发。

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Then recite it in front of the mirror aloud (or inside your head if you prefer) whenever you need a confidence boost.

当你需要自信的时候，面对镜子大声地背诵它(如果你喜欢的话可以在你的头脑里面默念)。

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From time to time I stopped before a polished mirror to turn my head this way and that.

NEWYORKER: Miracle Polish

All day at work I thought of nothing but those shining surfaces, like coins catching the sun, and when I came home I went from mirror to mirror, striking poses, turning my head from side to side.

NEWYORKER: Miracle Polish

The collie was hanging its head out the window, obstructing the driver-side mirror, she says.

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